Why did some european nations practices imperialism

Explanation:

With the rapid rise in wealth of the Industrial Revolution, some Europe countries expanded their empires into Asia and Africa.

The desire for expansion was motivated by the promise of economic growth, the sting of national rivalries, and a sense of moral superiority. Europe was looking to strengthen their trade markets throughout the world.

Many colonies on these continents were the places to get raw materials for Europe's factories at very cheap rate. Europe wanted to employ their surplus population.

Superior technology and improved medical knowledge helped to promote imperialism.

d. migration of french settlers into english colonies

the american civil war was not caused   by slavery but by economic factors.