What system was put in place after world war 1 to deal with the issue of Germany's former colonies

After WW1, the huge empires started to develop a search of something called great power status, which is a international relationships concept who designates a nation who acts with own protagonism, running in any influence degrees or directly power in that context (political, military, economic, and in a very subtle way, thin power.

Punitive actions were put in place after World War 1 to deal with the issue of Germany's former colonies. Germany had lost World War 1 by 1919.

USA, Great Britain, France and other allied countries demilitarised Germany i. e. no German fortifications or German forces were permitted in Germany's former colonies. Territorial, economic and military sanctions were done on Germany and their former colonies.