Question

what was the primary reason us entered world war 1

Answer 1

non-mathematical reasons

Answer 2

History

Answer 3

this is not the right place to post this question

Answer 4

a prince of Austria Hungary was assassination by a Serbian organization called the black hand

Answer 5

Why United states that was is asking

Answer 6

this led to Austria Hungary to demand for investigations in Serbia but Serbia refused and AH declared war on Serbia. So Serbians turned to the Russians so they began mobilizing their armies and that led Germany to be fearful so they declared war on Russia