[1] Unlike most of the state, this region was not part of the 1803 Louisiana Purchase, which applied to territory west of the Mississippi River.

[6] To administer the new territory along the Gulf of Mexico, Britain divided it at the Apalachicola River into two new colonial provinces, East and West Florida.

[8] Pinckney's Treaty of 1795 settled the initial dispute, but the sale of Louisiana by France in 1803 raised new questions about West Florida.

In 2006, the state legislature designated it the "official flag of the Republic of West Florida Historic Region.

In 1810, four parishes were established in the region: East Baton Rouge, Feliciana, St. Helena, and St. Tammany.

The Florida Parishes (in common with Greater New Orleans and Acadiana) has a humid subtropical climate, prone to hurricanes.

[19] While Greater New Orleans and Acadiana are historically and predominantly Roman Catholic,[20][21][22][23] the Florida Parishes are greatly influenced by Protestantism through British colonialism and missionary efforts, in addition to American settlement.

In contrast with North and Central Louisiana, however, the Florida Parishes region is still dominated by the Roman Catholic Church as its single-largest Christian denomination.