Question

Which of these was a factor in the u.s. entry in world war i?

a. the halt of the german army
b. the sinking of the lusitania
c. the signing of a peace agreement
d. the death of the heir to the italian throne

Answer 1

So look at the snip it should help you

Answer 2

The correct answer is B. When Germany attacked a civilian ship this made the United States enter the war. This was not the only factor but it was one because Germany directly attacked a US ally.