a state in 1820 as a result of the Missouri Compromise. Augusta was designated as its capital in 1827, over the current capital of Portland, and rival communities Brunswick and Hallowell. The Maine State Legislature continued meeting in Portland, however, until the completion of the Maine State House in 1832, designed by Charles Bulfinch. Augusta was incorporated as a city in 1849. After being named the state capital and the introduction of new industry, the city flourished. In 1840 and 1850, the city ranked among the 100 largest urban populations in the country. During the next decade, however, the city was quickly bypassed by rapidly growing metropolizes in the Midwest. Excellent soil provided for agriculture, and water power from streams provided for the industry. In 1837, a dam was built across the Kennebec where the falls drop 15 feet at the head of a tide. By 1838, 10 sawmills were contracted. With the arrival of the Kennebec & Portland Railroad in 1851, Augusta became an even more productive mill town. In 1883, the property of A. & W. Sprague Company was purchased by the Edwards Manufacturing Company, which erected extensive brick mills for manufacturing cotton textiles. They imported cotton from the South for processing and export to Europe. In the late 19th century, a paper and pulp plant was constructed. Other Augusta firms produced lumber, sash, doors, window shutters, broom handles, stone cutters' tools, shoes, headstones, ice and furniture. The city developed as a publishing and shipping center. Today, government and post-secondary education are important businesses. Since the mid-eighteenth century, there has been a military presence in Augusta. Fort Western has not had troops garrisoned there since the 1790s, but in 1828, the U.S. Government built an arsenal to protect their interests from Britain. During the Civil War, Augusta was a rendezvous point for Union soldiers traveling to the front. Many of the soldiers camped on the green in front of the capitol building. In 1862, Camp E.D. Keyes was established in the northwestern portion of the city. During World War I, Camp Keyes was used as a mobilization and training camp for soldiers. The camp eventually became a headquarters for the Maine National Guard. In 1929, the state legislature approved the placement of the Augusta State Airport next to the camp. As the airport grew, the use of the camp as a training facility was no longer possible. Today,