Answer:
Because back then, the Catholic Church stated that the Earth had to be the center of the solar system because God is perfect, therefore made Earth perfect, causing it to be the center of everything. This was wrong. Galileo and Copernicus had shared that the Sun was actually the center, not the Earth. This contradicted with what the church said, therefore what "God" said. The church called them out for blasphemy and they had to deny their ideas.
Explanation:
President Truman had the urge to use the atomic bomb against Japan because the American casualties would continuously rise unless the Empire of Japan surrenders. The thing that would make Japan surrender would be a cataclysmic event, and the bombing of Hiroshima and Nagasaki happened.
He fought a war on both fronts of his country, his agenda and alliance led him to fighting the 2 most powerful countries at the time, he invaded Russia during the winter with an ill prepared army. Had he not made these mistakes he may have gotten farther along in his achievements.
