Western
The Western is a genre, that is specialized on the conquest of the wild west of America. Mostly it is about the western settlement by eastern settlers.
The protagonists are cowboys, sheriffs, Indians, a bad guy and a beautiful woman the men fight for. And where are the locations of those movies? Of course Indian villages, cities with saloons in which men sit and drink whiskey and plains.
Well known examples for westerns are Winnetou, Once upon a Time in the West, 3:10 to Yuma, Rio Bravo, El Dorado and Dances with Wolves.