What was the primary goal of the European imperialism

What is the name for the main idea behind the settling of western lands by americans in the early-1800s?

Brainliesttt !me : ) why were the eastern european countries attempting to break free of the soviet union?

Ineed asap! ! what is the name of the system in which each branch of the u. s government can limit the actions of the other branches? a. perpetual union b. division of powers c. cooperative federalism d. checks and balances