How did the Supreme Court's ruling in Dred Scott v. Sandford increase sectional tension between the North and South?

the use of email to replace slower surface mail.

the right answer is the end of world war ii

after the end of a global wwii all the nations involved, in an attempt to create an organization to maintain world peace. this agreement would work settling international disputes via negotiation and arbitration instead of leading the issues escalate to another war.

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.

idk lol i just wanna finish mines