what event(s) helped lead the USA to the joining World War two ?

the japanese bombing pearl harbor is the answer

The United States officially joined World War II after the attack on Pearl Harbor on December 7, 1941. However, there were several events leading up to this significant event that influenced the U.S. decision to enter the war. Here are a few key events:

1. The Rise of Fascism: The ideological rise of fascist governments in Germany, Italy, and Japan during the 1930s presented a direct threat to democratic nations. Adolf Hitler's aggressive expansion in Europe, Benito Mussolini's invasion of Ethiopia, and Emperor Hirohito's militaristic policies in Japan heightened tensions.

To verify these events, you can consult historical sources, such as textbooks, articles, archives, or documentaries, that discuss the rise of fascism and its impact on international relations during the period leading up to World War II.

2. Invasion of Poland: On September 1, 1939, Germany invaded Poland, marking the beginning of World War II in Europe. This act violated international treaties and prompted countries, including the U.S., to reassess their stance on the conflict.

To find information on the invasion of Poland, a reliable approach is visiting reputable websites, online encyclopedias, or historical databases that provide detailed accounts of this event.

3. Lend-Lease Act: Before officially entering the war, the U.S. supported the Allied powers (including Great Britain, China, and the Soviet Union) through the Lend-Lease Act in March 1941. This act allowed the U.S. to provide military aid to countries fighting against the Axis powers.

To understand the Lend-Lease Act and its significance, you can explore reputable sources such as government websites, historical archives, or academic publications that discuss the U.S. policy during World War II.

4. Attack on Pearl Harbor: The Japanese surprise attack on the U.S. naval base at Pearl Harbor, Hawaii, on December 7, 1941, was the tipping point that led the U.S. to enter the war. This attack resulted in significant loss of life and damage to the U.S. Pacific Fleet, compelling the U.S. to declare war on Japan the following day.

To gather information about the attack on Pearl Harbor, you can refer to documentaries, eyewitness accounts, books, or primary sources, such as official reports and testimonials, that provide credible information about this tragic event.

Remember, when researching historical events, it is crucial to consult reliable sources, cross-reference information, and examine various perspectives to form a well-rounded understanding of the topic.

The aggression of Germany in Europe and Japan in the Pacific were viewed as threats to the U.S. Not only were some of our territories threatened, but our allies were being defeated. Of course when Japan bombed our naval base at Pearl Harbor in Hawaii, we immediately declared war on both Germany and Japan.

Check these sites for more information.

http://www.worldwariihistory.info/WWII/war.html

http://www.worldwariihistory.info/WWII/United-States.html