The main reason the german government signed the treaty of versailles was that

The main reason why Germany signed the Treaty of Versailles was because it lost the First World War, and in this treaty the winning countries imposed the punishment on Germany in 1919.

D. they feared the threat of an attack by the Allied forces.

Explanation:

honestly i love the walking dead, mainly the quotes. “well, pardon me young man, excuse the [insert bad word here] out of my gosh darn french, but did you just threaten me? ” sksk (of course it's not the exact words)