During that period, Larpenteur built Fort Alexander, a trading post for the Crows on the Yellowstone, after having set fire to the deserted Fort Van Buren, in the vicinity.
Larpenteur built Fort Alexander after. This was during that period. Larpenteur was having set fire to the deserted Fort Van Buren. This was in the vicinity. This was during that period. Fort Alexander was a trading post for the Crows on the Yellowstone.