Two factors which contribute to the cultural variety seen in the caribbean music

 The two factors which contribute in Caribbean music emulate the multi-cultural effect that have shaped the Caribbean are South America and Africa because the first historical figures to influence Caribbean musicians were from the South Americas and to some degree of Africa.

giant impact theory - the moon was formed from the collision between earth and another mars-sized body.

colliding planetesimals hypothesis - the moon was formed from the same cloud of material as earth.

capture hypothesis - the moon was locked into orbit by earths gravity as it was passing by it.

accretion hypothesis - the moon was formed from collisions and combining of planetesimals.

i think this is right, if not and you know better let me know.

your answer would b. the missisipi river

hope i you : )