Answer:
While WWI was fought in the trenches and used machine guns and poisonous gas, WWII was fought using modern artillery and machines utilizing more airplanes, ships, tanks, and submarines.
Special operations methods were also developed during this war together with atomic missiles and secret communications. It led to the development of the atomic bomb which was the catalyst in ending the war.
WWII ended with the defeat of Germany and Japan. It led to the rise of two new world superpowers, the USA and the Soviet Union. The United Nations was also established after the war in order to promote cooperation among nations and prevent another war.
Step-by-step explanation:
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