Which of the following offers the best analysis of why the United States entered World War I?(1 point)

Responses

The members of the Triple Alliance promised to help each other if attacked.
The members of the Triple Alliance promised to help each other if attacked.

Great Britain entered into an agreement with France and Russia called the Triple Entente.
Great Britain entered into an agreement with France and Russia called the Triple Entente.

The U.S. was angered by German unrestricted submarine warfare.
The U.S. was angered by German unrestricted submarine warfare.

Archduke Franz Ferdinand was assassinated by a Serbian nationalist.
Archduke Franz Ferdinand was assassinated by a Serbian nationalist.

The U.S. was angered by German unrestricted submarine warfare. This answer provides the most accurate analysis of why the United States entered World War I. The sinking of the British ocean liner Lusitania by a German U-boat, resulting in the death of American citizens, greatly angered the U.S. and played a significant role in the country's decision to enter the war.