The Department of Homeland Security (DHS) published a new poster online featuring World War II imagery, urging citizens to help locate and report immigrants who are in the country without ...

British Gen. Cornwallis’s sword, believed to be the one surrendered to Americans at Yorktown in 1781, is on display at the ...

Joseph Warren was a key leader of the American Revolution, mobilizing troops and managing a circle of spies. But he's mainly ...

This interactive, designed and built by Slate’s Andrew Kahn, gives you a sense of the scale of the trans-Atlantic slave trade across time, as well as the flow of transport and eventual ...