Question

What new weapon did America used to defeat the Japanese and end World War II?

Answer 1

Answer:

Atomic Bombs

Explanation:

There were 2 bombs detonated over the Japanese cities of Hiroshima and Nagasaki.  It killed approx 210,000 people, including children.  President Truman was the one to authorize the use of the atomic bomb.  This continued to lead to the surrender of Japan in ww2.