During the 19th century, Galveston became a major U.S. commercial center and one of the largest ports in the United States. It was for a time Texas' largest city, known as the "Queen City of the Gulf". It was devastated by the unexpected Galveston Hurricane of 1900, whose effects included massive flooding and a storm surge which nearly wiped out the town. The natural disaster on the exposed barrier island is still ranked today as the deadliest in United States history, with an estimated death toll of 6,000 to 12,000 people. The city subsequently reemerged during the Prohibition era of 1919–1933 as a leading tourist hub and a center of illegal gambling, nicknamed the Free State of Galveston until this era ended in the 1950s with subsequent other economic and social development.