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.

here are some events that to cause increased conflict between the north and south

1) mexican cession- gaining modern day california, utah, arizona, and new mexico from mexico. caused southern and northern politicians to fight over whether or not there would be slavery in these newly acquired territories.

2) uncle tom's cabin- this famous book described the cruelty of slavery in the south during the antebellum period, causing more northerners to support abolition and southerners to resent the book as they felt it unfairly depicted southern society.

3) kansas- nebraska act- disagreements over whether or not kansas and nebraska would be free or slave states caused issues between northern and southern politicians in congress.

4) bleeding kansas- this fighting took place in kansas after congress allowed this territory to vote on whether or not they would have slavery. citizens were killed and buildings were destroyed during this fighting.

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.