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USA States . com - US states Portal |
 | | During the 19th and 20th centuries, 37 new states were added to the original 13 as the nation expanded across the North American continent and acquired a number of overseas possessions. |
 | | The United States of America is a federal republic composed of 50 states, of which all except one - Hawaii islands - are in mainland America. |
 | | The United States of America, which covers the central part of North America, grew out of the British colonies that were established in the north America in the first half of the 17th century. |
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