Examlex
The temperature difference between the dry bulb and the wet bulb is known as the ____.
Kansas Exodus
The mass migration of African Americans from the southern United States to Kansas following the Reconstruction era, seeking political and social freedom.
Underground Railroad
Operating in the decades before the Civil War, a clandestine system of routes and safehouses through which slaves were led to freedom in the North.
Disenfranchisement
Depriving a person or persons of the right to vote; in the United States, exclusionary policies were used to deny groups, especially African-Americans and women, their voting rights.
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