In 1860,Abraham Lincoln was elected as U.S. president but his election was accepted by many southern states who decided to secede from the U.S. and form the Confederate States Of America with 6 other states(and eventually 11 all together)
cause-Lincoln had only won the election with 40% of the popular vote,which meant that the majority of the country did not support his ideals-especially anti-slavery sentiment.
Reconquering lost lands was a priority for Justinian I.
The correct answer is 2. Isolationism
Following world war 1, United States didn't want to mess with European affairs because they understood how bad the war was and didn't want to participate in it again. That's why when Wilson wanted to join the League of Nations they declined and the US remained on its own.
Answer:
I believe is the Boomerang effect
Explanation: