While homo sapiens originated in Africa, the earliest civilizations began in an area called the fertile crescent. It lies in the Middle East/western Asia.
Asia
because they wanted to
When ever they felt like it
It has a humid subtropical climate
civilization originated from south and moved towards north. Indus valley civilization was a part of indian culture. There was a continent called Lemuria and people came from that continent
the rivers
the rivers
Mountain ranges & deserts
antartica
An early civilization began there,and Chinese culture today evolved from that ancient beginning
The Niger river
The occupied fertile river valleys, which gave them the surplus produce on which civilisation could develop.