The First Amendment's Establishment Clause prohibits the government from making any law “respecting an establishment of religion.” This clause not only forbids the government from establishing an official religion, but also prohibits government actions that unduly favor one religion over another.
Answer:
The stock market crashed In 1930
Explanation:
Which lead to the great American depression which lead to banks being shut down
The U.S. withdraws from the war. Because they lost the support of the American people thinking that the war was unnecessary
A republic is the correct answer