Question: Dolan v. City of Tigard and Gravel v. United States were both cases in which US court?
Sentence (from "Dolan v. City of Tigard"): It was a landmark case regarding the practice of zoning and property rights, and served to establish limits on the ability of cities and other government agencies, to use zoning and land-use regulations to compel property owners to make unrelated public improvements.
Relevant evidence: No