The United States of America (USA) is a large country located in North America, bordered by Canada to the north and Mexico to the south. It consists of 50 states, with Washington, D.C. as its capital. The USA is known for its diverse geography, which includes mountains, plains, and coastlines, as well as a wide range of climates. The country has a population of over 330 million people, making it one of the most populous nations in the world. The USA is a federal republic, meaning it has a system of government where power is divided between the national and state governments. It is also recognized for its cultural influence, technological advancements, and economic power.