How did the spanish american war start?

americans were upset about the reports of spanish cruelty to cubans.

the uss maine exploded.

trouble in cuba disturbed trade with the u. s.

all of the above

none of the above

It is all of the above

Explanation:

I got the answer right on my quiz.

can you tell me what is it

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.