Answer :
The following is the order of events that led to the United States joining World War II based on their occurrence:
- Fascist dictators rise to power and World War I begins: The rise of the Japanese Emperor who bore imperialistic ideology culminated in the early tensions between different nations which eventually resulted in World War I.
- The Lend-Lease Act provides Military aid to Allied Forces while the U.S. remains neutral: The United States chose to stay out of the war but help its allies in the war by providing war equipment.
- Japan feels threatened and attacks the U.S. naval base at Pearl Harbor, Hawaii: Owing to the help extended by the United States to its allies, Japan chooses to teach the US a lesson by bombing one of the naval bases of the US Navy.
- The United States enters into World War II: After the attack on the US Naval base done by Japan, the US decides to participate in the war in order to bring it to an end.