Brewster County is the largest county in Texas, but has less than ten thousand people living in it according to the 2010 census. The county seat is Alpine and the most famous place in the county is Big Bend National Park. The county is named after Henry Percy Brewster. Brewster served as secretary to General Sam Houston and briefly as the Secretary of War for the Republic of Texas. Before the Civil War, Brewster practiced law and was appointed Attorney General of the State of Texas in 1849. During the Civil War, Brewster joined the Confederate cause and served on the staff of Generals Albert S. Johnston and John B. Hood. After the war he practiced law in San Antonio until his death in 1884. Pancho Villa and other Mexican bandits raided into Brewster County during the early years of the twentieth Century. This triggered a heavy American military presence which lasted until after WWI. Over the years, ranching has been and still is the most important economic activity, but some mining also takes place in the county.