To what does the Great Migration refer?

African Americans moving to the North to work in factories
German immigrants returning to Germany
restrictions on European immigrants coming to the United States

John locke, an enlightenment-era philosopher, influenced the american movement for independence. locke believed that all people were entitled to natural rights. which quotation from the preamble to the declaration of independence refers to natural rights?

Why did lincoln inform the confederacy that he would not e sending troops or weapons as food supplies were sent to fort sumter?

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.