One of the Maya Civilization's greatest accomplishments was: A: getting rid of social classes that divide people
B: uniting mesoamerica in one powerful empire
C: allowing people to vote for their leaders
D: using stars to play future events

d.prevent the spread of communism outside of eastern europe.

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

your mothers brothers brother in law would be your father.

1. temperance, abolitionist, suffragist