It was the Treaty of Paris
The excerpt provides an example of the regulating zoning responsibility of the local government. This can be proven with the definition of zoning which is; divide into or assign to zones, in particular. When compared to the example provided the definition seems to fit.
Answer:
Chelmno was the first extermination camp that the Germans established on Polish soil. Murder operations began there on December 8, 1941, and continued intermittently until January 1945. The Jews of the Lodz ghetto and the vicinity were the primary victims deported to Chelmno, where they were murdered by means of gas vans.
