Which best describes the result of the mongol invasions of korea between 1231-1273

Koreans defended their kingdom from the Mongol invasion.

Explanation:

During 1231, Mongol king Ogedei Khan ordered an invasion in Korea against Goryeo empire. These invasions were consist of six campaigns throughout the Korean Peninsula, caused the tremendous cost of civilian life. Throughout campaigns, Korea became a tributary ally of the Mongol Empire (Yuan Dynasty) for about 80 years.

Korea became a vassal state of the Mongol Yuan Dynasty for nearly 80 years.

Explanation:

after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.

c, because the american revolution was from 1765 to 1783.