Answer:
the power of eminent domain
Explanation:
Eminent domain is the power that can be excercised by a government to convert private property to public use. They must however compensate the owner of the property.
The government must display that the public use of the property is vital.
In the given instance Urban City wants to acquire undeveloped private land within the city limits to construct a public park.
The process by which they brought condemnation proceedings to obtain title to the land and determine its fair value to be paid to the private owner, is the government excercising their power of eminent domain