B. geographical boundaries created in earlier historical periods
Brown v. Board of Education was a landmark case in which it was finally proven that segregation in institutions of education was highly unconstitutional, so you could say that that is the greatest effect since it made other schools become open for everyone as well.
Britain and France
This is considered as one of the most powerful countries during that time. These countries also do not want the United States to be a powerful country. Confederate leaders will have an effect in confederacy break away. However, during the emancipation proclamation. England and France both banned slavery and cannot support the Confederacy which sought to retain slavery. It is quite clear that the Confederacy has little chance on their goal.
Answer:
the great depression
Explanation:
the united states was more focused on their own problems. it the 1930s was right when the Great depression was happening, so FDR's main focus was to recover the United States' economy.
A referendum is when people from one country vote secretly on a given problem. Hope it helps and what are the given options?