Answer:
Guilt was assigned to Germany as they caused the most deaths in the war. However, this is somewhat incorrect, because Austria-Hungary caused the war, not Germany.
Explanation:
The Germans had to give up land.
The Polish Corridor split Germany in 2.
It had to pay a massive amount of debt to the allies.
The military was reduced to 100,000 men, no airforce.
The Rhineland was demilitarized.