An 1898 map of the District of Columbia. Though it's difficult to imagine, Washington, D.C., wasn't always the capital of the United States. During the Revolutionary War, the 13 Colonies didn't really ...

All 50 states and the District of Columbia now allow high schools to award their graduates a seal of biliteracy, signaling that they’ve achieved multilingualism, mastering English plus another ...

All 50 states and the District of Columbia now allow districts to offer this distinction, called the seal of biliteracy, for students who pass a language assessment.

Two sets of ten stamps each were issued that year, and a set of ten was issued every year thereafter through 2012. The resulting series of sixty stamp designs depicted the fifty state flags, five ...