Railroads
By 1885 five railroads served the county, and in 1898 there were seven reaching out in all directions. Dallas was the transportation and shipping hub for north Texas, able to connect to the entire nation. New communities developed around train depots: Mesquite, Garland, Richardson, Addison, Carrollton, Irving, Grand Prairie, Duncanville, Seagoville, Wilmer, and Hutchins. The population soared, from barely 13,000 in 1870 to 67,000 in 1890, and then 135,000 by 1910.