The Treaty of Brest-Litovsk was what got Russia out of World War I. This gave up the Baltic State territories to Germany. This treaty allowed for temporarily relief, as the Russians were now able to focus on the Russian Civil War. This was due to the fact that they gave up land such as Poland, Finland, Estonia, Latvia, Ukraine, and Lithuania.
I think it should be considered a massacre because it was a mass killing
B. It brought about the unconditional surrender of Japan.
Not A, the bombs were dropped instead of invading, which had a very high estimated casualty rate if the US did.
Not C, Germany eventually faltered and caved in, and then surrendered in the European Theater.
Not D, the Japanese Empire was using Kamikaze attacks longs before Atomic weapons were developed.