1914 - 1918 Central powers (Germany, A.H, turkey) vs. Allies (Britain, Russia, Italy, Japan, canada and US in 1917)
causes: last grasp at the age of empires - want as much power as you can have, alliances creates a domino effect when war is called on countries. Archduke Franz Ferdinand is assassinated and creates turmoil and the call to war. canada troops are adopted in by Britain. NFLD also sends troops under Britains forces.