To what extent did the histories of africa and the americas parallel those of eurasia? in what ways did they forge new or different paths?

The rise of great empires throughout Eurasia; from the West (Britain, France, Portugal, Spain, Italy) and in the East (China, Japan, Russia) were the molding powers of America and Africa, as the cultures of Eurasia had advanced to a point higher than the cultures of America and Africa (in terms of technology and military power), who were in a still tribal state in the centuries of the great imperial conquests. The way in which Eurasia developed and fought wars between their empires, forced them and led to the search of new lands, riches and slaves, to gain power, which ended up taking them to Africa and America. There the Europeans, totally changed by force the lives and development of their civilizations and people. But by connecting (even in violent ways) they laid the foundations of the present world, connecting all continents and spreading knowledge of ancient Eurasia.