Comment by hearsathought

> the Eastern US

The eastern US pretty much wiped out beavers as most landowners view beavers as pests. Does not look anything like the southwest. If we introduce beavers to nevada, do you think nevada will look like upstate ny?

> much of the world would very nearly resemble the driest American Southwest of today

Most of the world doesn't have any beavers. Most of the world does not resemble the american southwest.

Rather than beavers creating the environment, it's the environment that created the beavers. Beavers exist in areas with plentiful rain/water for a reason. Look up rainfall patterns in the US and you'll see how illogical your argument is.