Ohio is a state in the Midwestern area of the United States, located in the state of Ohio. It is the 34th-largest state in terms of land area, and with a population of approximately 11.8 million people, it is the seventh-most populous and tenth-most densely inhabited of the fifty states. Besides Columbus, which serves as the state's capital and biggest city, the Columbus metro region, as well as Greater Cincinnati and Greater Cleveland, are the state's three major metropolitan areas. Ohio is bordered to the north by Lake Erie, to the east by Pennsylvania, to the southeast by West Virginia, to the southwest by Kentucky, to the west by Indiana, and to the northwest by Michigan. The state's capital is Columbus. Ohio has long been referred to as the "Buckeye State" because of its abundance of buckeye trees, and Ohioans are also referred to as "Buckeyes." Its state flag is the only one in the United States that is not rectangular in shape.
In honour of the Ohio River, which got its name from the Seneca language term ohiyo', which means "excellent river," "big river," or even "huge stream," the state is named after the river. In the late 18th century, the territory west of the Appalachian Mountains became a source of contention, which continued through colonial times and into the Northwest Indian Wars. It was separated from the resultant Northwest Territory, which served as the first boundary of the newly formed United States, and was admitted to the Union as the 17th state on March 1, 1803, and the first under the Northwest Ordinance, which was passed in 1803. As the nation's first post-colonial free state to be admitted to the union, Ohio went on to become one of the nation's early and most prominent industrial powerhouses in the twentieth century. Despite the fact that Ohio has shifted to a more information- and service-based economy in the twenty-first century, the state remains an industrial state, ranking seventh in GDP as of 2019, with the third biggest manufacturing sector and the second largest automotive manufacturing industry.
The state of Ohio is governed by three branches of government: the executive branch, which is lead by the governor; the legislative branch, which is comprised of the bicameral Ohio General Assembly; and the judicial branch, which is headed by the state Supreme Court. Ohio has 16 representatives in the House of Representatives of the United States of America. The state is well-known for its reputation as both a swing state and a bellwether state in terms of presidential elections. The state of Ohio has produced seven presidents of the United States. As a result, it has been dubbed "the Mother of Presidents" due to its historical significance.