What event led to the United States going to war? a. Japan's invasion of China
b. Germany's invasion of Poland
c. Japan's attack on Pearl Harbor
d. Germany's attack on Great Britain​

I think it was the pearl habor  so maybe C attack because on a website it states that "Pearl Harbor attack, (December 7, 1941), surprise aerial attack on the U.S. naval base at Pearl Harbor on Oahu Island, Hawaii, by the Japanese that precipitated the entry of the United States into World War II. The strike climaxed a decade of worsening relations between the United States and Japan."

hey,

i hope you are having a wonderful day

the correct answer is :

{b.}   ( american workers lose job opportunities )

hope this : )

    -sprinkles