Between 1795 and 1815, a network of Métis settlements and trading posts was established throughout what is now the U.S states of Michigan and Wisconsin and to a lesser extent in Illinois and Indiana. As late as 1829, the Métis were dominant in the economy of present-day Wisconsin and Northern Michigan. Many Métis families are recorded in the U.S. Census for the historic Métis settlement areas along the Detroit and St. Clair rivers, Mackinac Island and Sault Ste. Marie, Michigan, as well as Green Bay in Wisconsin. Their ancestral families were often formed in the early 19th-century fur trading era. The Métis have generally not organized as an ethnic or political group in the United States as they have in Canada, where they had armed confrontations in an effort to secure a homeland.