Which event occurred on november 11, 1918?
a. the first american troops arrived in europe.
b. the battle of meuse-argonne started.
c. the allies accepted the fourteen points.
d. the armistice ending the war was signed.

I believe the answer is: D.The armistice ending the war was signed.

The armistice was created to end the world war I between the allies and Germany. Within the armistice, Germany agreed to cease their military operation toward their neighbour countries and require Germany to release every single prisoners from the allied forces.

A A Declining economy

Explanation:

There poor economic policies led to a weakend military which allowed barbarians easy access to the empire.