Analysis of information sources in references of the Wikipedia article "Spanish West Florida" in English language version.
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: CS1 maint: numeric names: authors list (link)Spain never drew a clear line to separate the two Floridas, but West Florida extended easterly to include Apalachee Bay, which Spain shifted from the jurisdiction of St. Augustine to more accessible Pensacola.
Under Spanish rule, Florida was divided by the natural separation of the Suwanee River into West Florida and East Florida.
On July 21, 1821 all of what had been West Florida was named Escambia County, after the Escambia River. It stretched from the Perdido River to the Suwanee River with its county seat at Pensacola.