 The British colony of West Florida, with its capital at Pensacola, included all of the Panhandle west of the Apalachicola River, as well as southwestern Alabama, southern Mississippi, and the Florida parishes of modern Louisiana.West Florida included the important cities of Pensacola, Mobile, Biloxi, Baton Rouge, and, disputably, Natchez.In 1763, the British laid out Pensacola's modern street plan.