It's <span>domestic opposition to the war.</span>
Answer:
D. the Union honoring tribal treaties signed with the Confederacy
Explanation:
In The tribal treaties, the confederacy promised to not disturbed the Native's land in exchange for their help during the Civil War.
After the civil war ended, the Union decided no to honor these treaties and forced a lot of tribes to migrated out of their ancestral land.
The union wanted to used the land to provide enough space for railroads development. They wanted a fast method of distribution to deliver products from southern states to mid-norther states.
Explanation: conflict has led to many geographical shifts mainly in Europe. You have WW1 examples which resulted in many conflicts given all the violence that there was. You have treaties made without other countries’ consents like the Treaty of Versailles. You also have the creation of new countries such as Poland, Yugoslavia, Lithuania, Latvia, the separation or independence of Hungary from Austria. Those small countries surrounding Russia were brought up to stop the spread of communism, since communism was spreading like a “plague” therefore communism wouldn’t reach the powers. Then you had Poland which was established and was used in other to block Russia’s attempt of fighting for land from the regions of the great powers. Poland was there as a sort of blockade between Russia and Germany, Britain, and France. Hope that is clearer:)