<p>Why did the Midwest become part of the United States instead of remaining under English, Spanish, or Native control? In Philadelphia Merchants on Western Waters, historian Kim M. Gruenwald reveals commerce and trade, rather than war and political conflict, as the driving force behind America's westward expansion.</p> <p><a href="https://pcntv.com/donate">Donate</a> | <a href="https://pcntv.com/membership-signup">Signup</a> | <a href="https://pcntv.com">pcntv.com</a></p>