Answer:
B is the answer
Explanation- The United States and the Soviet Union agree that an objective of their policies is to remove the danger of nuclear war and of the use of nuclear weapons.
It would take about 25 minutes because 5•4 is 20 and each time around is 6 minutes.
1. wanted to establish an abolitionist republic = John Brown: he was against slavery and wanted to eradicate it
2. sued for his freedom = Dred Scott: he wanted to get his freedom in the court, but was unsuccessful
3. Underground Railroad = Harriet Tubman: established safe houses for escaped enslaved families
4. Clay's plan to end sectionalism = American Plan: they refused to negotiate with unions
5. surrender began Civil War = Fort Sumter: after this battle, numerous countries joined the Confederacy
6. won 1860 Presidential election = Abraham Lincoln
7. proslavery constitution in Kansas = Lecompton Fraud: written as a response to the anti-slavery resolutions
Only one senator is elected from a state during any one election.
I believe it was the defense the Chinese were implementing, from fear of the Moguls invading. So the Great was in place being built and the Government closed off trade and travel so no more boats were built.