In the 18th and 19th centuries, why did european countries practice imperialism?
a. they hoped to develop their economies to compete with east asia.
b. they were in competition with one another for resources in africa.
c. they believed it was their duty to spread islam to the world.
d. they were engaged in longstanding proxy wars in central america.

The answer is B, they were in competition with one another for the resources in Africa, which is why they practiced imperialism.

Imperialism represented a way for European countries to expand their empire and exploit the resources in the countries they conquered. In the 18th and 19th centuries, great empires like the Spanish, the British and the Portugese were in a battle to gain as much territory in America, Africa and Asia as possible.

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.

the virginia plan called for three branches of government and two houses of congress. representation in each house would be determined by population. the new jersey plan called for three branches of government and a single house of congress. each state would have an equal vote.