Why did Northern Workers worry about job competition? only the elite were employable
economic future of Northern workers was uncertain
the treaty of constitutional equality for African Americans
Confederates were given preference in all jobs

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.

d.)   when the us left nato after the end of the cold war and they had to evolve to focus on more humanitarian measures with the smaller budget