What was the main benefit of slavery to governments in the colonies

What is one reason the united states had a two party system

What three details does the author use to describe the great depression

For your research paper on the history of maui, you locate a source covering the overall history of the hawaiian islands. as you evaluate the source, however, you decide not to use it in your research because it never mentions maui. this significant omission of information falls under what criterion for evaluating resources?