The concept of concurrent powers responds to the fact that many actions are necessary to serve the people at both the federal and state levels. Most notably, the power to impose and collect taxes is needed in order to raise money needed to provide police and fire departments, and to maintain highways, parks, and other public facilities.
It started in the Tibetan plateau.
The Security Council and The General Assembly
There was a Nazi general that wanted his own army wiped out........for some reasons