Complex sentence: After the war, Langston was appointed inspector general for the Freedmen's Bureau, a Federal organization that assisted freed slaves and tried to oversee labor contracts; it also ran a bank and helped establish schools for freedmen and their children.
Split into simpler sentences: After the war, Langston was appointed inspector general for the Freedmen's Bureau, a Federal organization that assisted freed slaves and tried to oversee labor contracts. The Bureau also ran a bank and helped establish schools for freedmen and their children.