Nicolas Chauvin is a legendary, possibly apocryphal French soldier and patriot who is supposed to have served in the First Army of the French Republic and subsequently in La Grande Armée of Napoleon.
Chauvin is the eponym of chauvinism, but later used to refer to any form of bigotry or bias (e.g., male chauvinism).
Annexation refers to the forcible acquisition of control over a territory involving a change of sovereignty.