1. Social Change
   1. Women in the workplace
   2. African Americans moving out of the south
   3. The Great Migration
   4. Victory Gardens
2. Warfare
   1. New Technology
      1. Machine guns
      2. Airplanes
      3. Tanks
      4. Poison Gas
   2. Total war
   3. No Man's Land
3. Politics
   1. Zimmerman Telegraph
   2. Civil liberties curtailed
   3. Convoy system
   4. Liberty Bonds
   5. Propaganda
   6. Espionage Act of 1917