Savannah then changed its outer garb of wood palisades to a gray "Savannah brick" fort surmounting the bluff. By Revolutionary times wharves served ocean trade, and sailors caroused in seamen's inns. The town had its liberty pole and a patriots' battalion when news of Lexington came. The Declaration of Independence led to Savannah's designation as capital of the new state. By December, however, the British had retaken the city with 2,000 troops, and the royal governor, who had fled earlier, returned. An attempt by American troops to recapture Savannah failed, and more than 1,000 Americans and 700 Frenchmen were killed. General "Mad Anthony" Wayne's forces finally drove the British from Savannah in 1782.
In 1795, tobacco culture and Eli Whitney's cotton gin brought prosperity back to Savannah. Meanwhile, the city's growth followed the orderly pattern laid out by Colonel Bull. By the first decade of the new century, Classical Revival or Regency architecture had superseded Georgian Colonial. Savannah, with new forts protecting the estuary and strengthening Fort Wayne on the bluff, fared better during the War of 1812. Afterward, architect William Jay and master builder Isaiah Davenport added splendid mansions that fronted palm-lined squares. The steamboat Enterprise plied upriver from here to Augusta in 1816; three years later, on May 22, 1819, the SS Savannah set sail from Savannah for Liverpool to be the first steamer to cross the Atlantic. Savannah had become the leading market and shipping point for cotton, naval stores, and tobacco, and prosperity increased until the Civil War.
Throughout the war, Savannah tried to hold its own. Fort Pulaski, which the Confederates took control of even before Secession, was retaken by a Union artillery assault on April 11, 1862, and became a Union military prison. Despite repeated Union naval battering, the Confederates held Fort McAllister until Sherman's "March to the Sea" on December 13, 1864. Although Confederate troops resisted for three days after Sherman demanded Savannah's surrender, Union forces eventually occupied the city, and Confederates were forced to escape to Hutchison Island.
Reconstruction was painful, but 20 years later cotton was king again. Surrounding pine forests produced lumber and resins; the Cotton and Naval Stores Exchange was launched in 1882 while financiers and brokers strode the streets with confidence. By the 20th century, Savannah turned to manufacturing. With more than 200 industries by World War II, the city's prosperity has been measured by the activity of its port, which included shipbuilding booms during both world wars. Extensive developments by the Georgia Port Authority in the past decade have contributed to the city's commercial, industrial, and shipping growth.
Today more than 1,400 historically and architecturally significant buildings have been restored in Savannah's historic district, making it one of the largest urban historic landmark districts in the country. Another area, the Victorian district south of the historic district, offers some of the best examples of post-Civil War Victorian architecture in the country. The city that launched the Girl Scouts of America also plays host to modern Girl Scouts who visit the shrine of founder Juliette Gordon Low.