QUICK ANSWER
Three factors that spurred American imperialism were the need to expand even after the frontier had vanished, with industrialization warranting further claim to more resources, the growing importance of foreign trade to the American economy and the desire to compete with European empires for power. Because of this mixture of cultural, economic and political factors, the U.S. was influenced to practice imperialism, particularly during the late 19th and early 20th centuries.
Slavery first began in the Jamestown colony because the colonists were making their money off of planting and growing crops like tobacco and wanted the help from more people(slaves). They mainly used slaves from Africa because their home was far away so it would be hard for them to run away back home.
B
I think it’s has to d with the north
