They walked across the bering strait which was the land bridge at the time this is the theory
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The North China plain is bordered on the north by the Yan Mountains, on the west by the Taihang Mountains and the Henan highlands, and on the southwest by the Tongbai and Dabie mountains. To the south it merges into the Yangtze Plain.
ancient Egypt
Africa's first great civilization emerged in ancient Egypt in c. 3400 BC. Carthage was founded by Phoenicians in the 9th century BC. Ancient civilization, based around the River Nile in Egypt, which emerged 5,000 years ago and reached its peak in the 16th century BC.
((can you plzz give me brainliest!!))