What event was a major factor in the development of the fertile soils of the upper Midwest and Northeast United States?
A) glaciation
B) volcanic eruptions
C) tectonic forces
D) erosion by meandering rivers

Question

Quizplus · Accepted Answer

Glaciation is the process of glaciers scraping and grinding rocks across the landscape, creating sediment and soil. As glaciers receded in the upper Midwest and Northeast United States, they left behind fertile soil and created the regions' iconic rolling hills and fertile valleys.

What Event Was a Major Factor in the Development of the Fertile