Free State of Galveston made these businesses increasingly difficult to sustain. By the end of the 1950s, this era of Galveston's history had ended. The island of Galveston, which lies on the Gulf of Mexico, held one of the first major settlements in the eastern part of what is now Texas. During the mid-to-late-19th century, it became the largest city in the state. Galveston was also an important national commercial center and one of the busiest seaports in the United States, as the Port of Galveston was able to capitalize on Texas' rapid rise in the cotton trade. Its downtown was known as the
Port of Galveston island's grade. As a result, the port was now considered a deep-water port and was able to handle larger ships. By the time World War I began, Galveston "was the leading cotton port in the world, the third largest exporter of wheat, and an important sugar import center." The port also became a major immigration center, with almost 50,000 people entering the country between 1906 and 1914. In March 1920 local longshoreman called for a strike, seeking a wage increase and recognition of their union, the International Longshoreman's Association. Some of the port traffic was diverted to the Port of