James K. Polk is often overlooked, yet the 11th president added 1.2 million square miles to the US in one term.

The 19th century term describes the perceived right of Americans to use force or the threat of force to wrest desireable land from the grasp of... What does Trump mean when he invokes America's ...

Apologies for getting dark on what should be an uplifting celebration of America's 250th birthday. But as someone who has ...

Chances are you haven't heard the term "manifest destiny" since high school history class. That is until President Trump's inaugural address last month, when he used it to call for America to "plant ...