Why was guilt assigned to Germany? What other stipulations in the treaty were humiliating to Germany?

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.

arresting and exicuting citizens