Why Did The US Enter WW2?

So, which are the reasons that the US had to enter WW2?

The United States of America first thought that the War was Europe and Asia’s internal armed conflict and they had nothing to do with it.

Short Answer:

  • The Sudden Japanese Attack At Pearl Harbor, Hawaii Island.
  • Nazi Germany And Fascist Italy Declared War On The United States of America.
  • Had To Enter Save And Help The United Kingdom.
  • To Protect Democracy And Human Rights.

Either way, due to their neutrality, they were able in supplying their goods to various countries, including Axis and Allied.

It helped them in making a lot of profit.

But suddenly what happened that they broke the neutrality and entered into the great destruction.

Let’s try to clear doubts throughout this post, step by step.

Why Did The US Enter WW2, world war question

4 Main Reasons Why Did The US Enter World War 2

1. The Sudden Japanese Attack At Pearl Harbor

In 1941 on the month of December 7th, the Empire of Japan did an operation in America’s Pearl Harbor, located on Hawaii island.

It was an airstrike from the Japanese side in America’s main Navy base in the Pacific Ocean.

Including 21 ship damages, more than 2400 people died in that two hours sudden attack.

The incident was like a heavy stroke in America’s self-dignity and failure of intelligence.

Because just an hour before, diplomats between these two countries were talking over solving the disputes in the Pacific ocean.

Hence, the sudden attack almost shocked the entire United States.

After a day from the incident, on 8th September 1941, US President Franklin Delano Roosevelt declared war on Japan and made its first entry into WW2.

Experts believe that if Japan does not attack Pearl Harbor, then America probably would not have been involved in World War II.

Many experts also consider this incident as the main reason for the defeat of Central power.

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why did the united states of america entered world war 2

2. Nazi Germany And Fascist Italy Declared War On The USA

On 27 September 1940; Hitler’s Nazi Germany, Mussolini’s Fascist Italy, and the Empire of Japan signed a treaty in Berlin.

The treaty was the ‘Tripartite Pact’, also popular as the ‘Berlin Pact’.

As per the treaty, these three nations came to an agreement that they would have to declare war on that country, which declares war against one of those members.

In short, they signed the agreement to fulfill and protect each other’s expansionists ambitions.

In 1941 on 8th September, the United States of America officially declared war on the Empire of Japan.

Therefore, as per their agreement on 11th September, Nazi Germany and Fascist Italy also declared war on the United States.

On the same particular day, the USA also had to declare war on Germany and Italy, even though they had no big conflicts against each other.

After that, the USA directly joined allied nations and entered into the Wars of Europe and Asia.

[Interesting fact: Until the attack of Pearl Harbor, the US had been exporting their goods to Germany. Even in 1939 and 1940, their exports were 75 times greater than the years before]

 

3. Had To Enter Save And Help The United Kingdom

However, this was a secondary cause of America’s entry into the war; but we can also count it as a cause.

Actually, many experts of the United States believed that the security of their country was incumbent over the British Empire winning the war against Axis forces.

If Nazis were able to defeat Britain, then in the near future they would plan to invade the USA also.

So, helping the Britishers would be a better choice for Americans rather than staying neutral.

Either way, the United States and the United Kingdom were both democratic nations.

From this side, the US had already some sympathy for Britain.

 

4. To Protect Democracy And Human Rights

This one is not a primary cause, but it also has a lot of importance.

The United States of America is a country that has fought some huge battles to protect democracy and human rights (Life, Liberty, and the pursuit of Happiness).

In their history, two of the major battles were the Revolutionary war of independence and the Civil War.

In these great wars, thousands and lakhs of people gave up their lives only to protect two things; one was democracy and the other was human rights. 

America knew very well that if Axis power wins in World War 2, then they would end up all the democratic systems from the world.

Because Germany, Italy, Japan all were authoritarian nations.

Therefore, though, in the beginning, they didn’t involve in the conflict, but they never wanted the Axis forces’ victory here.

After the Pearl Harbour incident, they directly got a chance to fight again for democracy.

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