Religion was important because people wanted to have a reason for the changing of the seasons, even an answer to why the world was created. And even why we were created to answer the question of do we have a purpose or do we just exist? It drove society apart by making people pick sides of which religion is the right or even true religion.
THEY BECAME PART OF A NEW SOUTHERN GOVERNMENT
Hoover blamed the American people for the Great Depression.
As the Depression deepened, Hoover failed to recognize the severity of the situation or leverage the power of the federal government to squarely address it.
The answer is Roosevelt. He was the one who supported the Manhattan project and construction of the nuclear bomb, but Truman was the one who made the decision to drop it.