Answer:
A,b,c
Explanation:
too much plowing of the grasslands causes light soil which was picked up by the high winds in order to cause the dust bowl
<span>Settlement houses made a
notable contribution to Progressive Era reform primarily by lobbying municipal
authorities for better city services in slum neighborhoods. The progressive era
movement’s leaders sought for laws that could make the settlements more safe
and hygienic through lobbying the authorities to solve these problems. </span>
Hitler and his army were the reason for the holocaust.
D. Individuals own businesses, and they compete with one another for profits