1. War in Europe Cause and Effect

2. European nationalists Cause: They believed that oppressed people should overthrow foreign rules and rule themselves Effect: Creation of mistrust and rivalry between nations

3. Archduke of Austria-Hungary Cause: Serbian terrorist group wanted Austria to give Bosnia independence Effect: Austria-Hungary declare war on Serbia

4. Germany Cause: Germany & Austria-Hungary become allies; Russia prepares for war Effect: Germans march through Belgium; Britain declares war

5. Trench Warfare Cause: Troops dig themselves in and its difficult to dislodge them Effect: Battles lasted for months without achieving anything on either side

6. United States Cause: Americans were divided; Woodrow Wilson did not want involved Effect: American economy prospered by filling orders for war; U.S. continued trading

7. Reflection I think that: Using key terms explain the horrors of World War I warfare