Answer:
Answers are below
Explanation:
2/3 of Americans lived within 50 miles of the Atlantic coast.
Fewer than 1/10 of Americans lived west of the Appalachian Mountains.
Travel was hard and slow.
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It weakened it because in the Great Depression they lost all money
What are the options for this question?
It's "C) Surfaces with higher pH levels protect lichens from acid rain."