The United States of America is a federal republic made up of 50 states, with Washington, D.C. as its capital. Founded in 1776 following the Declaration of Independence, the country has played a central role in global politics, economics, and culture. Its government is based on a system of checks and balances, with executive, legislative, and judicial branches. The U.S. has a diverse population shaped by centuries of immigration and a complex history that includes Indigenous cultures, slavery, and civil rights movements. It has the world’s largest economy, driven by industries such as technology, finance, manufacturing, and energy. Major cities like New York, Los Angeles, and Chicago influence global media, art, and commerce. The U.S. is also a leader in higher education and scientific research. While it faces ongoing challenges, the country continues to be defined by its democratic values, innovation, and cultural influence around the world.