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The West Coast of the continental United States makes up part of the Pacific Ring of Fire, an area of heavy tectonic and volcanic activity that is the source of 90% of the world's earthquakes. [28] The American Northwest sees the highest concentration of active volcanoes in the United States, in Washington , Oregon and northern California along the Cascade Mountains .
The first documented use of the phrase "United States of America" is a letter from January 2, 1776. Stephen Moylan, a Continental Army aide to General George Washington, wrote to Joseph Reed, Washington's aide-de-camp, seeking to go "with full and ample powers from the United States of America to Spain" to seek assistance in the Revolutionary War effort.
The continental United States is the area of the United States of America that is located in the continent of North America. It includes 49 of the 50 states (48 of which are located south of Canada and north of Mexico , known as the "lower 48 states", the other being Alaska ) and the District of Columbia , which contains the federal capital, Washington, D.C.
27 giu 2022 · The majority of the land area of the United States is found in the contiguous U.S, with 83.65% of the country’s total area. This area is 3,119,885 square miles (8,080,470 square kilometers) in size. Contiguous means adjacent or sharing a boundary with.
21 ore fa · The United States is a country in North America that is a federal republic of 50 states. Besides the 48 conterminous states that occupy the middle latitudes of the continent, the United States includes the state of Alaska, at the northwestern extreme of North America, and the island state of Hawaii, in the mid-Pacific Ocean.
The contiguous United States occupies an area of 3,119,884.69 square miles (8,080,464.3 km 2). Of this area, 2,959,064.44 square miles (7,663,941.7 km 2) is actual land, composing 83.65 percent of the country's total land area, and is comparable in size to the area of Australia.
22 gen 2024 · Covering a total area of 9,833,520 sq. km, the United States is the world's 3rd largest country. Located along the northern shore of the Potomac River in the federal district of Columbia is, Washington D.C. - the country's capital city.
