How were the central powers defeated

The central powers were conformed by Austria, Hungary, Bulgaria, German, and Ottoman Empire during the first world war. There was several motives for the defeat of the central powers:

1. The failure of the Schlieffen plan. This plan consisted on sending forces belonging to Germany through Belgium in order to attack France.

2. The use of trenches warfare.

3. The entering of USA to the war.

4. The change of leadership in Britain and France.

5. Germans were defeated in the air war.

6. The German spring offensive AKA Ludendorff offensive.

7. The new united military leadership in 1918.

8. The collapse of Germany's allies.

One of reasons the Central Powers were defeated was the entrance of the US forces into the war brought vast new resources to the allied forces. This also meant that the Allied forces were able to produce more war materials than the Central Powers, which proved to be decisive.