The Preamble

The Preamble

How Beavers Made America

How a single species drove colonization, global trade, the War of 1812, and the expansion into the West.

Sharon McMahon's avatar
Sharon McMahon
Dec 04, 2025
∙ Paid

If you had wandered across North America several thousand years ago, you might have crossed paths with a creature that looked like it belonged in The Princess Bride — a beaver the size of a black bear. Yes, you read that correctly. Giant beavers once roamed North America, Asia, and Europe, sharing the landscape with creatures like saber-toothed tigers. …

This post is for paid subscribers

Already a paid subscriber? Sign in
© 2026 Sharon McMahon · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture