The side of World War I that included the UK, France, and Russia.
What are the Allied Powers?
German Submarines.
What are U-Boats?
His assassination sparked World War I.
Who is Franz Ferdinand (of Austria-Hungary)?
What are the Central Powers?
What are zeppelins?
This message from Germany to Mexico was one cause of the US joining World War I with the Allies.
What is the Zimmerman Telegram?
The pre-war alliance of France, Russia, and UK.
What is the Triple Entente?
Result of Trench Warfare where progress/advance is not possible.
What is a stalemate?
The long-term causes listed in the M.A.I.N. acronym.
What is Militarism, Alliances, Imperialism, and Nationalism?
An intergovernmental organization that was intended to bring collective security after World War I.
What is the League of Nations?
A german submarine sunk this British passenger ship (with Americans on board).
What is the Lusitania?
This strait was an important supply line to Russia (that the Allies failed to control).
What are the Dardanelles?