Offshore oil and gas in the Gulf of Mexico (United States) blowout) began on April 20, 2010, in the Gulf of Mexico on the BP-operated Macondo Prospect. Killing eleven people, it is considered the largest marine oil spill in the history of the petroleum industry and estimated to be 8% to 31% larger in volume than the previous largest, the Ixtoc I oil spill. In 2012, federal leases in the Gulf of Mexico produced of oil, which made up 19.5% of all U.S. oil production that year, and more than that of any U.S. state other than Texas. The 2012 production was less than the in 2009; however, due to new
Gulf Coast of the United States of New Orleans, being situated as a key to commerce on the Mississippi River and in the Gulf, had become the largest U.S. city not on the Atlantic seaboard and the fourth largest in the U.S. overall. Two major events were turning points in the earlier history of the Gulf Coast region. The first was the American Civil War, which caused severe damage to some economic sectors in the South, including the Gulf Coast. The second event was the Galveston Hurricane of 1900. At the end of the 19th century Galveston was, with New Orleans, one of the most developed