A Map Showing the Progress of the Discovery of the Gulf of Mexico.
The US Gulf Coast is on the southern coast of the Unites States, and includes the states of Florida, Louisiana, Texas, Mississippi and Alabama.
After Spanish explorers arrived in the early 1500's, the area became a Spanish sea for nearly two hundred years. French explorers came to the gulf in 1700, and founded the city of New Orleans in 1718. Rivalries between Spain, France and England dominated the coast for nearly a century, until the United States bought most of the region from France in 1803 with the Louisiana Purchase. Between 1810 to 1819, the US acquired Florida, and Texas became part of the United States after the Mexican American War.