Iowa is the 29th state of the United States, having joined the union on December 28, 1846. The official name of the state is "State of Iowa", and the U.S. Post Office abbreviation for the state is IA.
Iowa is bordered by Minnesota on the north, Nebraska and South Dakota on the west, Missouri on the south, and Wisconsin and Illinois on the east.
Iowa's main agricultural outputs are hogs, corn, soybeans, oats, cattle and dairy products. Its industrial outputs are food processing, machinery, electric equipment, chemical products, publishing and primary metals.
Tourist attractions include the Herbert Hoover birthplace and library near West Branch; the Amana Colonies; Fort Dodge Historical Museum, Fort, and Stockade; the Iowa State Fair at Des Moines in August; and the Effigy Mounds National Monument, a prehistoric Indian burial site at Marquette.