During Reconstruction after the Civil War, there was debate around how to treat the defeated South. Radical Republicans favored harsh policies like slow readmission to the Union and maintaining troops in the South. President Andrew Johnson wanted more lenient treatment like what Lincoln supported, with generosity towards the South. However, Johnson's dismissal of Congress led to impeachment proceedings. By 1877, Northern troops withdrew from the South and local governments regained control, enacting segregationist laws. Westward expansion was spurred by mining for gold and silver, cattle ranching on the open range, and farming enabled by the Homestead Act. The Transcontinental Railroad, completed in 1869, connected the country and facilitated westward migration and transport of goods using