B. It established a blueprint for international cooperation among the major European powers.
Napoleon bonaparte was the ruler of france
B the end of communism. That did not happen. So it is NOT a result of the Korean War.
The Mexican-American War, that happened between 1846 and 1848 was a result of the dispute over the territory of Texas, which back then was called the Republic of Texas, and the Mexican President still considered Texas as Mexico's province.