An island country with the strongest navy in Europe.
Britain
The event that led to the outbreak of WWI
Assassination of Franz Ferdinand
Airplanes
The largest country in Europe (1914) - in terms of both population and physical size.
Russia
An agreement between two or more countries, guaranteeing that they will fight alongside each other in the event of war.
Alliance
The country that imposed a naval blockade on Germany's ports.
Britain
Tank
Germany
A type of combat involving two sides digging in on opposite sides of "no-man's-land."
Trench Warfare
The phrase used to describe Britain and Germany's trying to produce a bigger navy than the other.
Naval Arms Race
A deadly yellow fog.
Poison Gas
This country hated Germany because they lost a humiliating war to Germany in the recent past.
France
Germany's decision to sink neutral ships without giving them a chance to surrender.
Unrestricted Submarine Warfare
The country Germany invaded to get through to France.
Belgium
The word for a German submarine.
U-Boat (or unterseeboot)
Germany's ally to the southeast.
Austria-Hungary
Germany's plan to attack France first, then head east to attack Russia.
Schlieffen Plan
Russia's was poorly developed, leading to belief that they would take a long time to mobilize their troops.
Railroad Network
Spear (or Lance)