Answer:
the compromise of 1850 was the first slave related historic event that happend hope it helps
Explanation:
3 main reasons for imperialism:
raw materials:caused imperialism because nations wanted to gain raw materials for their newly developed factories
manufactured goods:caused imperialism because nations wanted to gain markets to sell their goods
white man's burden:caused imperialism because nations felt it was their duty to "civilize" the nations in Africa and Asia
Reasons against imperialism:
hypocrisy, America claims government to be chosen by the people
America will now be involved in Asian conflicts
