Match each example to its cause for imperialism. Examples to match:

A: Religion
B: nationalism
C: Social Darwinism
D. Economic

1. __ America needed ports and naval bases for trade and protection

2. __ The people of the colonies should be converted to western civilization, including Christianity

3.__ The Europeans believed that they were superior and that it was only natural for to conquer inferior , weaker people

4.__ Great Britain wanted recognition for its vast number of colonies and resources