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
Battle of Galveston to destroy the grounded "Westfield" with explosives rather than let it fall into enemy hands. Renshaw and several Union troops were subsequently killed when the explosives were set off too early. Union troops on shore were convinced that their own ships were surrendering and, therefore, laid down their arms. The remaining U.S. ships did not surrender and succeeded in retreating to Union-controlled New Orleans. The Union blockade around the city of Galveston was lifted temporarily for four days, and Galveston remained the only major port that remained in Confederate hands at the end of the war. The Confederate Congress stated