There were conflicts between the Roman patricians and plebeians. The prohibition on intermarriage between patricians and plebeians was thus repealed. In the 4th century, plebeians gradually obtained political equality with patricians. The distinction between patricians and plebeians in Ancient Rome was based purely on birth. Tarquinius was ousted by a conspiracy of patricians, not plebeians. This noble status is what separated the patricians from the plebeians. A new magistracy open to patricians and plebeians, the praetorship, was also created. The relationship between the patricians and the plebeians eventually caused the Conflict of the Orders. It was an important reform shifting practical power from the patricians to the plebeians. The powers of a magistrate came from the people of Rome (both plebeians "and" patricians). The four occidental levels are peasants, citizens, patricians and noblemen. Until 337 BC the praetor was chosen only from among the patricians. Meanwhile, Crassus entertains the Roman patricians with lavish entertainment. Citizens are similar in status to Roman Patricians. These men he called patres, and their descendants became the patricians.