About United States: Home to the world's oldest written constitution still in use! The US Constitution, adopted in 1789, is the oldest written national constitution still in continuous use.

Capital: Washington, D.C. · Population: ~335 million · Language: English (no official language) — the US has no official language at the federal level; Spanish is the 2nd most-spoken language and is an official language of Puerto Rico · Currency: US Dollar · National dish: Hamburger