AP - World History Practice Test
AP AP Environmental History & Human-Nature Interactions 3
The Dust Bowl of the 1930s in the United States was primarily caused by:
Select your answer
A
A global volcanic winter that altered precipitation patterns
B
Decades of deep plowing that destroyed drought-resistant prairie grasses, combined with severe drought
C
Overgrazing by bison herds that federal policy had allowed to recover
D
Government irrigation projects that depleted the Ogallala Aquifer
Hint