Answer :
When Stephen Douglas explained that slavery could be excluded from a territory if the officials did not pass laws to protect it, his argument became known as the Freeport Doctrine.
On August twenty seven, 1858, at Freeport, Illinois, throughout the second of the Lincoln-Douglas debates, Stephen A. politico bestowed the Freeport ism. President Lincoln, a one-term U.S. Representative, ran against politico for the U.S. Senate and vehemently opposed any efforts to increase the legal boundaries of slavery.
Lincoln created a shot to steer politico to settle on between the Kansas-Nebraska Act's idea of well-liked sovereignty, that let locals decide whether or not or to not keep slavery in an exceedingly U.S. territory, and also the majority ruling of the u. s. Supreme Court within the case of Scott v. Sandford, that command that slavery couldn't be de jure prohibited in U.S. territories.
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