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Stephen A. Douglas (1813-1861) was a U.S. politician, leader of the Democratic Party, and orator who espoused the cause of popular sovereignty in relation to the issue of slavery in the territories before the American Civil War (1861-1865).

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Stephen A. Douglas was an American politician from Illinois, and the leader of the Democratic Party. He supported popular sovereignity, also called squatter sovereignity, which stated that each territory had the right to determine if they would accept slavery or not.

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