The gross domestic product in 2020 was $348 billion. Etymology The word Wisconsin originates from the name given to the Wisconsin River by one of the Algonquian-speaking Native American groups living in the region at the time of European contact. French explorer Jacques Marquette was the first European to reach the Wisconsin River, arriving in 1673 and calling the river Meskousing (likely ᒣᔅᑯᐤᓯᣙ meskowsin) in his journal. Subsequent French writers changed the spelling from Meskousing to Ouisconsin, and over time this became the name for both the Wisconsin River and the surrounding lands. English speakers anglicized the spelling from Ouisconsin to Wisconsin when they began to arrive in large numbers during the early 19th century. The legislature of Wisconsin Territory made the current spelling official in 1845. The Algonquian word for Wisconsin and its original meaning have both grown obscure. While interpretations vary, most implicate the river and the red sandstone that lines its banks. One leading theory holds that the name originated from the Miami word Meskonsing, meaning "it lies red", a reference to the setting of the Wisconsin River as it flows through the reddish sandstone of the Wisconsin Dells. Other theories include claims that the name originated from one of a variety of Ojibwa words meaning "red stone place", "where the waters gather", or "great rock". History Early history Wisconsin has been home to a wide variety of cultures over the past 14,000 years. The first people arrived around 10,000 BCE during the Wisconsin Glaciation. These early inhabitants, called Paleo-Indians, hunted now-extinct ice age animals such as the Boaz mastodon, a prehistoric mastodon skeleton unearthed along with spear points in southwest Wisconsin. After the ice age ended around 8000 BCE, people in the subsequent Archaic period lived by hunting, fishing, and gathering food from wild plants. Agricultural societies emerged gradually over the Woodland period between 1000 BCE to 1000 CE. Toward the end of this period, Wisconsin was the heartland of the "Effigy Mound culture", which built thousands of animal-shaped mounds across the landscape. Later, between 1000 and 1500 CE, the Mississippian and Oneota cultures built substantial settlements including the fortified village at Aztalan in southeast Wisconsin. The Oneota may be the ancestors of the modern Ioway and Ho-Chunk nations who shared the Wisconsin region with the Menominee at the time of European contact. Other Native American groups living in Wisconsin when Europeans first settled included the