The doctrine of popular sovereignty increased sectional tension before the Civil War because it A) pitted proslavery and antislavery settlers against each other in a conflict known as "Bleeding Kansas." B) repealed the Fugitive Slave Act of 1850, greatly angering the South affirmed the division between slave states and free states as defined by the Missouri Compromise led to the Lincoln-Douglas debates and allowed Abraham Lincoln to become a US Senator D) the

A

Explanation:

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.

during both period congress passed law restricting the civil liberties of american citizen that meet with the overall public support is the one statement that explain the rate scare of the 1920 and 1950 is very similar