What was the underlying cause of the cold war?

the mother countries succeed in doing that by using the colony's natural resources, facilities in a colony, they do not take good care of these facilities, causing them to fail. this has had negative and positive effects on the people of africa, they then governed through direct or indirect rule depending on the country.

hope thsi

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast