Instruct: Given a question, retrieve relevant passages that can help answer the question.
Query: Did the Romans invent concrete?
Although concrete had been used on a minor scale in Mesopotamia, Roman architects perfected Roman concrete and used it in buildings where it could stand on its own and support a great deal of weight. The first use of concrete by the Romans was in the town of Cosa sometime after 273 BC. Ancient Roman concrete was a mixture of lime mortar, aggregate, pozzolana, water, and stones, and was stronger than previously-used concretes. The ancient builders placed these ingredients in wooden frames where they hardened and bonded to a facing of stones or (more frequently) bricks. The aggregates used were often much larger than in modern concrete, amounting to rubble.
During the fall of the Roman Empire, some aqueducts were deliberately cut by enemies but more fell into disuse because of deteriorating Roman infrastructure and lack of maintenance, such as the Eifel aqueduct ("pictured right"). Observations made by the Spaniard Pedro Tafur, who visited Rome in 1436, reveal misunderstandings of the very nature of the Roman aqueducts:
During the Renaissance, the standing remains of the city's massive masonry aqueducts inspired architects, engineers and their patrons; Pope Nicholas V renovated the main channels of the Roman "Aqua Virgo" in 1453. Many aqueducts in Rome's former empire were kept in good repair. The 15th-century rebuilding of aqueduct at Segovia in Spain shows advances on the Pont du Gard by using fewer arches of greater height, and so greater economy in its use of the raw materials. The skill in building aqueducts was not lost, especially of the smaller, more modest channels used to supply water wheels. Most such mills in Britain were developed in the medieval period for bread production, and used similar methods as that developed by the Romans with leats tapping local rivers and streams.
Rome's first aqueduct was built in 312 BC, and supplied a water fountain at the city's cattle market. By the 3rd century AD, the city had eleven aqueducts, sustaining a population of over a million in a water-extravagant economy; most of the water supplied the city's many public baths. Cities and towns throughout the Roman Empire emulated this model, and funded aqueducts as objects of public interest and civic pride, "an expensive yet necessary luxury to which all could, and did, aspire".
With the fall of the Western Roman Empire, the tradition of carving large works in stone and sculpting figures in bronze died out, as it effectively did (for religious reasons) in the Byzantine (Eastern Roman) world. Some life-size sculpture was evidently done in stucco or plaster, but surviving examples are understandably rare. The best-known surviving large sculptural work of Proto-Romanesque Europe is the life-size wooden Crucifix commissioned by Archbishop Gero of Cologne in about 960–965, apparently the prototype of what became a popular form. These were later set up on a beam below the chancel arch, known in English as a rood, from the twelfth century accompanied by figures of the Virgin Mary and John the Evangelist to the sides. During the 11th and 12th centuries, figurative sculpture strongly revived, and architectural reliefs are a hallmark of the later Romanesque period.
Rome's first aqueduct supplied a water-fountain sited at the city's cattle market. By the third century AD, the city had eleven aqueducts, sustaining a population of over a million in a water-extravagant economy; most of the water supplied the city's many public baths. Cities and municipalities throughout the Roman Empire emulated this model, and funded aqueducts as objects of public interest and civic pride, "an expensive yet necessary luxury to which all could, and did, aspire."
Before its establishment as a Republic, Rome was ruled by kings (Latin "reges", singular "rex"). In Roman tradition, Rome's founder Romulus was the first. Servius Tullius was the sixth, and his successor Tarquinius Superbus (Tarquin the Proud) was the last. The nature of Roman kingship is unclear; most Roman kings were elected by the senate, as to a lifetime magistracy, but some claimed succession through dynastic or divine right. Some were native Romans, others were foreign. Later Romans had a complex ideological relationship with this distant past. In Republican mores and institutions kingship was abhorrent; and remained so, in name at least, during the Empire. On the one hand, Romulus was held to have brought Rome into being more-or-less at a stroke, so complete and purely Roman in its essentials that any acceptable change or reform thereafter must be clothed as restoration. On the other, Romans of the Republic and Empire saw each king as contributing in some distinctive and novel way to the city's fabric and territories, or its social, military, religious, legal or political institutions. Servius Tullius has been described as Rome's "second founder", "the most complex and enigmatic" of all its kings, and a kind of "proto-Republican magistrate".
Some writers have questioned whether the Roman pyramids were modelled on the much less steeply pointed Egyptian pyramids exemplified by the famous pyramids of Giza. However, the relatively shallow Giza-type pyramids were not exclusively used by the Egyptians; steeper pyramids of the Nubian type were favoured by the Ptolemaic dynasty of Egypt that had been brought to an end in the Roman conquest of 30 BC. The pyramid was, in any case, built during a period when Rome was going through a fad for all things Egyptian. The Circus Maximus was adorned by Augustus with an Egyptian obelisk, and pyramids were built elsewhere in the Roman Empire around this time; the Falicon pyramid near Nice in France was suspected by some to have been constructed by Roman legionaries who followed an Egyptian cult, but more recent research has indicated that it was actually built between 1803 and 1812.
In 451 BC, Rome's traditional consular government was replaced by a committee of ten senior statesmen, known as the decemvirs, who were tasked with drawing up the complete body of Roman law, based on existing law and tradition, as well as on Greek models reported by a group of Roman envoys who had been sent to study Greek law. Their efforts resulted in the first ten tables of Roman law, but the work was incomplete, and so a second college of decemvirs was appointed for the following year. Appius Claudius Crassus, who had been consul-elect before the decemvirate, was the only member of the first college to participate in the second, and he ensured that his colleagues for the second year were like-minded and easily dominated by himself. The final two tables of Roman law that they drew up imposed harsh restrictions on the plebeians, and forbade the intermarriage of patricians and plebeians.
In order to avoid the difficulty of giving an exhaustive list of deities when devoting a temple or sacred building, a structure explicitly dedicated to "all deities" also came to be referred to as a "Pantheon". The best known of such structures is the Pantheon of Rome, first built between the years 27 BCE and 14 CE. The building standing today was constructed on the same site around 126 CE. It was dedicated to "all gods" as a gesture embracing the religious syncretism in the increasingly multicultural Roman Empire, with subjects worshipping gods from many cultures and traditions. The building was later renovated for use as a Christian church in 609 under Pope Boniface IV.
The Roman Empire, at its height (c. 117 CE), was the most extensive political and social structure in western civilization. By 285 CE the empire had grown too vast to be ruled from the central government at Rome and so was divided by Emperor Diocletian into a Western and an Eastern Empire. The Roman Empire began when Augustus Caesar became the first emperor of Rome (31 BCE) and ended, in the west, when the last Roman emperor, Romulus Augustulus, was deposed by the Germanic King Odoacer (476 CE). In the east, it continued as the Byzantine Empire until the death of Constantine XI and the fall of Constantinople to the Ottoman Turks in 1453 CE. The influence of the Roman Empire on western civilization was profound in its lasting contributions to virtually every aspect of western culture.
The native language of the Romans was Latin, an Italic language the grammar of which relies little on word order, conveying meaning through a system of affixes attached to word stems. Its alphabet was based on the Etruscan alphabet, which was in turn based on the Greek alphabet. Although surviving Latin literature consists almost entirely of Classical Latin, an artificial and highly stylized and polished literary language from the 1st century BC, the spoken language of the Roman Empire was Vulgar Latin, which significantly differed from Classical Latin in grammar and vocabulary, and eventually in pronunciation. Speakers of Latin could understand both until the 7th century when spoken Latin began to diverge so much that 'Classical' or 'Good Latin' had to be learned as a second language
Augustus (; 23 September 63 BC – 19 August AD 14) was a Roman statesman and military leader who was the first Emperor of the Roman Empire, controlling Imperial Rome from 27 BC until his death in AD 14. His status as the founder of the Roman Principate has consolidated an enduring legacy as one of the most effective and controversial leaders in human history.
The Pantheon (, ; , from Greek "Pantheion", "[temple] of all the gods") is a former Roman temple, now a church, in Rome, Italy, on the site of an earlier temple commissioned by Marcus Agrippa during the reign of Augustus (27 BC – 14 AD). It was completed by the emperor Hadrian and probably dedicated about 126 AD. Its date of construction is uncertain, because Hadrian chose not to inscribe the new temple but rather to retain the inscription of Agrippa's older temple, which had burned down.
The invention of the first writing systems is roughly contemporary with the beginning of the Bronze Age of the late 4th millennium BC. The Sumerian archaic cuneiform script and the Egyptian hieroglyphs are generally considered the earliest writing systems, both emerging out of their ancestral proto-literate symbol systems from 3400 to 3200 BC with earliest coherent texts from about 2600 BC. It is generally agreed that Sumerian writing was an independent invention; however, it is debated whether Egyptian writing was developed completely independently of Sumerian, or was a case of cultural diffusion.
The invention of the first writing systems is roughly contemporary with the beginning of the Bronze Age in the late 4th millennium BC. The Sumerian archaic cuneiform script and the Egyptian hieroglyphs are generally considered to be the earliest writing systems, both emerging out of their ancestral proto-literate symbol systems from 3400–3200 BC with the earliest coherent texts from about 2600 BC. It is generally agreed that Sumerian writing was an independent invention; however, it is debated whether Egyptian writing was developed completely independently of Sumerian, or was a case of cultural diffusion. A similar debate exists for the Chinese script, which developed around 1200 BC. The pre-Columbian Mesoamerican writing systems (including among others Olmec and Maya scripts) are generally believed to have had independent origins.
Romanian descended from the Vulgar Latin spoken in the Roman provinces of Southeastern Europe. Roman inscriptions show that Latin was primarily used to the north of the so-called Jireček Line (a hypothetical boundary between the predominantly Latin- and Greek-speaking territories of the Balkan Peninsula in the Roman Empire), but the exact territory where Proto-Romanian (or Common Romanian) developed cannot certainly be determined. Most regions where Romanian is now widely spokenBessarabia, Bukovina, Crișana, Maramureș, Moldova, and significant parts of Munteniawere not incorporated in the Roman Empire. Other regionsBanat, western Muntenia, Oltenia and Transylvaniaformed the Roman province of Dacia Traiana for about 170 years. According to the "continuity" theory, modern Romanian is the direct descendant of the Latin dialect of Dacia Traiana and developed primarily in the lands now forming Romania; the concurring "immigrationist" theory maintains that Proto-Romanian was spoken in the lands to the south of the Danube and Romanian-speakers settled in most parts of modern Romania only centuries after the fall of the Roman Empire.
Latin and Greek were the official languages of the Roman Empire, but other languages were important regionally. Latin was the original language of the Romans and remained the language of imperial administration, legislation, and the military throughout the classical period. In the West it became the lingua franca and came to be used for even local administration of the cities including the law courts. After all freeborn inhabitants of the Empire were universally enfranchised in 212 AD, a great number of Roman citizens would have lacked Latin, though they were expected to acquire at least a token knowledge, and Latin remained a marker of "Romanness".
The Pergamon Bridge is a Roman substruction bridge over the Selinus river (modern "Bergama Çayı") in the ancient city of Pergamon (today Bergama), modern-day Turkey. The wide structure, the largest of its kind in antiquity, was designed during Hadrian's reign (AD 117–138) in order to form a passageway underneath a large court in front of the monumental "Red Basilica" temple complex. The two intact tubes, which consist of supporting walls covered with barrel vaults, still serve their purpose to this day.
While Latin remained the main written language of the Roman Empire, Greek came to be the language spoken by the well-educated elite, as most of the literature studied by Romans was written in Greek. In the eastern half of the Roman Empire, which later became the Byzantine Empire, Latin was never able to replace Greek, and after the death of Justinian, Greek became the official language of the Byzantine government. The expansion of the Roman Empire spread Latin throughout Europe, and Vulgar Latin evolved into dialects in different locations, gradually shifting into many distinct Romance languages.
The entire monument is made of Pentelic marble, from Mt. Pentelikon, 18.2 km northeast of the arch. Pentelic marble was used for the Parthenon and many other notable structures in Athens, although its quality can vary significantly. The marble used for the arch is of a lower grade that had more inclusions than that used in the best Athenian buildings. The arch was constructed without cement or mortar from solid marble, using clamps to connect the cut stones. It is 18m high, 13.5m wide, and 2.3m in depth. Its design is fully symmetrical from front to back and side to side.
In 451 BC, a council of ten distinguished Romans of consular rank was appointed in place of the consuls, for the purpose of drawing up tables of Roman law, based on a combination of ancient traditions and Greek models. One of the decemvirs was Gaius' nephew, Appius Claudius Crassus. In their first year, the decemvirs published ten tables of laws, to the general approval of the people. Since the task for which the decemvirate had been created remained incomplete, it was decided to elect a new college of decemvirs for the following year. Although Appius had affected a mild and agreeable demeanor, and won the trust of the plebeians, his colleagues suspected that he might wish to remain in power, and accordingly they appointed him to name the new college, and resigned their office to set an example.
Concrete has been used since ancient times. Regular Roman concrete for example was made from volcanic ash (pozzolana), and hydrated lime. Roman concrete was superior to other concrete recipes (for example, those consisting of only sand and lime) used by other cultures. Besides volcanic ash for making regular Roman concrete, brick dust can also be used. Besides regular Roman concrete, the Romans also invented hydraulic concrete, which they made from volcanic ash and clay.
Some of the earliest examples of concrete slabs were built by Roman engineers. Because concrete is quite strong in resisting compressive loads, but has relatively poor tensile or torsional strength, these early structures consisted of arches, vaults and domes. The most notable concrete structure from this period is the Pantheon in Rome. To mould this structure, temporary scaffolding and formwork or falsework was built in the future shape of the structure. These building techniques were not isolated to pouring concrete, but were and are widely used in masonry. Because of the complexity and the limited production capacity of the building material, concrete’s rise as a favored building material did not occur until the invention of Portland cement (and developments by the Edison Portland Cement Company) and reinforced concrete.
The architecture of Ancient Rome at first adopted the external Greek architecture and by the late Republic, the architectural style developed its own highly distinctive style by introducing the previously little-used arches, vaults and domes. A crucial factor in this development, coined the Roman Architectural Revolution, was the invention of concrete. Social elements such as wealth and high population densities in cities forced the ancient Romans to discover new (architectural) solutions of their own. The use of vaults and arches together with a sound knowledge of building materials, for example, enabled them to achieve unprecedented successes in the construction of imposing structures for public use.
It was in the area of architecture that Roman art produced its greatest innovations. Because the Roman Empire extended over so great of an area and included so many urbanized areas, Roman engineers developed methods for city building on a grand scale, including the use of concrete. Massive buildings like the Pantheon and the Colosseum could never have been constructed with previous materials and methods. Though concrete had been invented a thousand years earlier in the Near East, the Romans extended its use from fortifications to their most impressive buildings and monuments, capitalizing on the material’s strength and low cost. The concrete core was covered with a plaster, brick, stone, or marble veneer, and decorative polychrome and gold-gilded sculpture was often added to produce a dazzling effect of power and wealth.