Across
- 3. Archduke Ferdinand was the heir
- 5. urged to attack the US in a German Note
- 7. Treaty that ended the War
Down
- 1. weapon first used used in Somme Battle
- 2. the city of Ferdinands assassination
- 4. seize fire or stop the battle
- 6. pandemic that threatened soldiers
- 7. missiles fired by submarines
- 8. formal friendship between nations