The United States of America is a federal republic consisting of 50 states and a federal district, Washington, D.C.. It is primarily located in North America, bordering both the Atlantic and Pacific Oceans. It shares land borders with Canada to the north and Mexico to the south. The U.S. is the third or fourth largest country in the world by land area. The nation's capital is Washington, D.C.
Known for its diverse geography, the U.S. features everything from mountains, plains, forests, and deserts to coastlines. Key attractions include landmarks like the Statue of Liberty, the Golden Gate Bridge, and Times Square, as well as natural wonders such as the Grand Canyon and Yellowstone National Park. The U.S. boasts a varied climate, ranging from temperate to tropical and arctic. Recent developments include efforts to secure critical mineral supply chains through international collaborations and address public health concerns such as H5 bird flu outbreaks.