Flag of the USA.

The United States of America (USA) is a federal republic on Earth, established in July 1776 out of a group of former British possessions on the East Coast of North America, before expanding south and west acorss the North American continent throughout the 19th century. Most of the Teenage Mutant Ninja Turtles' adventures occur in the USA. Since 1959 it is composed of 50 subdivisional states:

Federated States of the USA