A semi-fictitious history of the Wild West from 1757-1928 according to the movies

The only prerequisite for this list is that events take place between said dates somewhere in the Americas. Suggests for new additions to the timeline would be welcomed.

The American West

1757 (French and Indian War)
The Mohican Uncas is killed in a confrontation with a Huron war party (1)

1820
In Southern California the outlaw El Zorro declares war on the corrupt municipal manager Luis Quintero (2)

1825
John Morgan is captured by the Dakota Sioux (3)

1855
American soldier of fortune William Walker invades Nicaragua and assumes the Presidency (4)

Captain...