What was the freeport doctrine?
a-stephen douglas's argument that people could keep slavery out of a territory by
refusing to pass laws supporting it.
b-john brown's manifesto that was intended to launch a slave rebellion.
c-chief justice taney's ruling on the dred scott case.
d-abraham lincoln's argument that the dred scott decision was unconstitutional.

The correct answer is A) Stephen Douglas's argument that people could keep slavery out of a territory by refusing to pass laws supporting it.

The Freeport Doctrine was Stephen Douglas's argument that people could keep slavery out of a territory by refusing to pass laws supporting it.

Abraham Lincoln and Stephen Douglas were candidates for the Senate of the state of Illinois and had a series of debates that caught the attention of the people, During the second debate on August 27, 1858, in Freeport, Illinois, Douglass established his idea that people could keep slavery out of a territory by refusing to pass laws supporting it. He was defending the principle of Popular Sovereignty. In the debate, Lincoln was against the argument of Douglass and showed his opposition to slavery.