Answer:
1.they decreased the farm prices by moving to California hoping for luck
2.the Great Migration! Economic exploitation, social terror, and political disenfranchisement were the push factors. The political push factors being Jim Crow, and in particular, disenfranchisement. Black people lost the ability to vote.
I'm feeling sweet so here is the 3rd answer
3.
in both events people had to migrate because their side of the world wasn't good for them anymore. whats different is that in the dust bowl they migrated so they could stay healthy from the dust a keep their prices up but in the great migration they migrated because they didn't want to stay in slavery!
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Explanation: