The history of New Orleans, Louisiana traces the city's development from its founding by the French in 1718 through its period of Spanish control, then briefly back to French rule before being acquired by the United States in the Louisiana Purchase in 1803. During the War of 1812, the last major battle was the Battle of New Orleans in 1815. Throughout the 19th century, New Orleans was the largest port in the Southern United States, exporting most of the nation's cotton output and other farm products to Western Europe and New England. As the largest city in the South at the start of the Civil War (1861–1865), it was an early target for capture by Union forces. With its rich and unique cultural and architectural heritage, New Orleans remains a major destination for live music, tourism, conventions, and sporting events and annual Mardi Gras celebrations. After the significant destruction and loss of life resulting from Hurricane Katrina in 2005, the city would bounce back and rebuild in the ensuing years.