They followed animals and found a good place to live.
People migrated from Asia to the Americas because they followed animals and found a good place to live.
Historians and archeologist think that after the last ice age, a natural frozen bridge allowed people from Asia to cross to America through the Bering Strait. The strait separates Russia from Alaska by 58 miles. Because the territory was frozen, humans in that time could follow animal herds to hunt them and feed their families
The answer is "A", "They benefited from the trade networks".
A trade network is an arrangement of individuals in various terrains who exchange products forward and backward. Trade includes the exchange of merchandise or administrations starting with one individual or element then onto the next, regularly in return for cash. A framework or system that permits trade is known as a market. An early type of trade, barter, saw the immediate trade of merchandise and enterprises for different products and ventures.
Apartheid (“apartness” in the language of Afrikaans) was a system of legislation that upheld segregationist policies against non-white citizens of South Africa. After the National Party gained power in South Africa in 1948, its all-white government immediately began enforcing existing policies of racial segregation. Under apartheid, nonwhite South Africans (a majority of the population) would be forced to live in separate areas from whites and use separate public facilities. Contact between the two groups would be limited. Despite strong and consistent opposition to apartheid within and outside of South Africa, its laws remained in effect for the better part of 50 years. In 1991, the government of President F.W. de Klerk began to repeal most of the legislation that provided the basis for apartheid. President de Klerk and activist Nelson Mandela would later win the Nobel Peace Prize for their work creating a new constitution for South Africa.