sentence: Prehistory means history of a time before any written record.
sentences_after: In such cases, it is very difficult to tell anything definite about the prehistory of China or any other country. Even then, historians believe some facts about the China of that period. By 5000 BC, people had learnt farming. They had started cultivating millet a type of grain and possibly some more types of grains. By 2500 BC, Bronze Age has come to China.
concept_name: prehistory
headings: History of China Prehistory