This was the main goal of the Gallipoli campaign—to open a supply route and "leverage" this specific Ally in the East.
Russia
After the Battle of the Marne stopped the German advance, both sides began doing this to protect themselves from gunfire.
What is digging trenches?
This was the main "Cause" of the U-Boat war: Britain used its navy to do this to German ports.
What is a naval blockade?
This happened in the 1700s, spreading nationalism and new ideas like democracy.
This "battle" was actually a series of battles in 1914 when Germany first invaded Belgium.
What is the Battle of the Frontiers
This German military plan failed because it didn't account for getting "stuck" in a stalemate on the Western Front.
What is the Schlieffen Plan
This was the primary reason the Gallipoli campaign ended in a stalemate by September 1915—the troops couldn't move past these.
What are the cliffs? (or What is the high ground?)
This is the specific name for the German submarines that hunted ships in the Atlantic.
Unterseeboote
This battle, fought in 1916, holds the record for being the longest battle of the entire war.
What is the Battle of Verdun
This battle happened during the first year of the war, when Russia mobilized faster than Germany expected.
What is the Battle of Tannenberg.
This term describes the "chain reaction" of countries promising to fight for each other after the assassination of the Archduke.
What is The July Crisis
This chess term describes a situation where neither side can win or move forward, which happened in both France and Turkey.
What is a stalemate?
This was the strategy where U-Boats would sink any ship (not just military) and do it without surfacing first to give warning
Unrestricted submarine warfare
This meeting happened all the way back in 1815 to try and keep Europe peaceful after Napoleon.
What is the Congress of Vienna
This was supposed to be a quick battle, where the British navy would knock their "weaker" opponent out of the war... it didn't work.
The unhappy result of the government forcing people to join the military against their will.
Conscription Crisis
This was the terrifying "new" weapon Canadians had to hold their breath through during the Battle of Ypres.
What is chlorine gas?
This famous passenger ship was sunk in May 1915, turning the world against Germany.
What is the Lusitania
This battle happened at the same time (roughly) as Verdun, and was one of the most deadly battles in history.
What is the Battle of the Somme
The Battle of Verdun
This 1870-1871 war is why France and Germany were already bitter enemies before WWI even started.
The Franco-Prussian War
At the Battle of the Somme, the British gained only a few kilometers but lost over this many men.
What is over one million?
This second passenger ship was sunk by German U-Boats, this time in the Mediterranean Sea.
What is the SS Arabic.
This refers to two different wars that happened just before the start of World War I (1912-1913)
What were the Balkan Wars
This battle required France using about 600 local taxis in order to get their soldiers to the front quickly.
The Battle of the Marne