from what I remember of my US geography, prior to the " invasion" of the non-native settlers most land east of the Mississippi river was solid forest, as was most of the Pacific Coast, and the Rockies. Even the Great Plains had many tree stands. It was only when the settlers cleared the forests (including Florida) that cattle and crops were put on the land. Most of the droughts in the US are man-made due to the removal of the natural tree cover. Some of you refer to raking leaves and such; that is to cultivate an un-natural lawn. You don't see green lawns in the forests! I say, plants lots of trees and remove the lawns. And that's my opinion.
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