Question: What era was a well-known American fur trader and politician alive, who's mother was Jane Fisher, who married Joe Rolette, Sr, that lasted from the Louisiana Purchase in 1803 to Minnesota's achieving statehood in 1858?
Sentence (from "Sibley Historic Site"): Located in what is now the city of Mendota, the site consists of four limestone buildings and a large lawn area.
Relevant evidence: No