I could be wrong but is it B?
Answer:
African-Americans in Texas participated in the Civil Rights movement of the 1960s by taking part together with Mexican Africans in national rallies aimed at eliminating racial barriers and segregation.Black Texans held demonstrations in the state to voice out the endurance of segregated conditions which was wrong .They also instituted boycotts of racist merchants.
Explanation:
FairVote - 12th amendment. After the 1800 Presidential Election, the 12th Amendment was adopted to fix a flaw in the Constitution that had allowed Thomas Jefferson to tie in the Electoral College with his vicepresidential candidate Aaron Burr.
Answer:
fall of the Soviet Union? idk