The Schlieffen Plan to defeat France quickly in 1914 failed.
The British naval blockade prevented supplies getting through to Germany.
The USA had sent over a million men to France by the beginning of 1918.
The USA lent more than $7 billion to the Allies during WW1.
The Belgian Army put up strong resistance to the German advance at the Battle of Mons 1914.
French and British troops stopped the German advance at the Battle of the Marne 1914.
The German advance through Belgium was so rapid that their supply lines could not keep up.
The British Navy avoided defeat at the Battle of Jutland.
Germany submarines targeted US ships in the Atlantic Ocean.
By 1918, Allied commanders had developed effective new weapons such as the tank.
The UK/France/USA produced twice as much steel as Germany and her allies.
The USA was the most powerful economy in the world by 1914.
The failure of the Schlieffen Plan led to the stalemate of trench warfare.
Russia mobilised quickly in 1914. Germany diverted troops from France to fight in the East.
The USA discovered that Germany had asked Mexico to join the war against the USA.
Germany suggested that Mexico could have Texas in return for joining the war.
Germany failed to defeat the French Army at the Battle of Verdun 1916.
US public opinion was outraged by German attacks on US ships.
A German submarine sunk the US ship Lusitania in 1915, killing US civilians.
The German Spring Offensive of 1918 failed to defeat the Allies in France.
1916-17 was known as the 'Turnip Winter' in Germany.
The British naval blockade caused starvation in Germany.
Russian advances in 1916 forced Germany to divert troops to support Austria.
Morale fell in the Austro-Hungarian Army following defeats in 1916.
Some nationalists in Austria-Hungary wanted independence for Slovakia, Czechia, Poland.
Germany's ally, Bulgaria surrendered in September 1918.
Yugoslavs, Poles, Czechoslovaks, Hungarians declared independence in 1918.
German sailors mutinied in November 1918.
Anti-war riots broke out in German cities in November 1918.
Germany's ally, the Ottoman Empire surrendered in November 1918.
The Allies developed tactics to overcome trench stalemate.
Italy joined the war on the Allies' side in 1915.
