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  The United States of America (USA) is a federal republic located in North America. It consists of 50 states, a federal district (Washington, D.C.), and several territories. The USA is one of the world's most influential and powerful countries, with a significant impact on global politics, economy, culture, and technology. Key Points about the USA: Geography: The United States is characterized by its diverse geography, including mountains, plains, deserts, and coastlines. It has both the world's tallest mountain (Mount Everest) and the lowest point on the continent (Death Valley). Government: The USA operates under a federal system of government, with power divided between the national government and individual states. It follows a democratic system with three branches of government: executive, legislative, and judicial. Economy: The USA has the largest economy in the world, driven by a mix of industries, including technology, finance, manufacturing, agriculture, and servic...