What factors contributed to the start of world war 1

are their options?

otherwise i can't

6 or 2

explanation:

hope this you

but i think its 6

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.

the answer is true. i hope this .