Reynolds Political Map of the United States (1854)
N.B.: The black states are slave states; the red states, free. The green-shaded part illustrates the territories opened to slavery on the principle of “popular sovereignty,” introduced as a part of the Kansas Nebraska Act of 1854, an act which effectively repealed the Missouri Compromise of 1820 & radically destabilized the already unstable politics of America, leading, among other things, to the guerrilla warfare generally called Bleeding Kansas.
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