In the United States, the words "Louisiana Creole" refers to people of any race or mixture thereof who are descended from colonial French La Louisiane and colonial Spanish Louisiana (New Spain) settlers before the Louisiana region became part of the United States in 1803 with the Louisiana Purchase. Both the word and the ethnic group derive from a similar usage, which began in the 16th Century, in the Caribbean that distinguished people born in the French, Spanish, and Portuguese colonies from the various new arrivals born in their respective, non-Caribbean homelands. Some writers from other parts of the country have mistakenly assumed the term to refer only to people of mixed racial descent, but this is not the traditional Louisiana usage.