Question

I know this is math but can someone answer this question

7. What caused the United States to join the Allies in fighting World War I?

Answer 1

the attack on pearl harbor

Answer 2

These are my options

the sinking of the Titanic
the German embargo on gasoline.
the United States's fear of the Austro-Hungarian powers
the Germans' use of unrestricted submarine warfare

Answer 3

i would say the sinking of the titanic

Answer 4

ok

Answer 5

Pearl Harbor made sure the US got in on WWII. The correct answer here is the Germans' use of unrestricted submarine warfare. The Titanic was an accident, had nothing to do with the Germans.