Final answer:
The question pertains to property law specifically about non-freehold estate leasing agreements, underscoring the role of contractual rights and non-government restrictions like restrictive covenants and easements in land use and real estate.
Step-by-step explanation:
The question refers to the four main types of non-freehold estate leasing agreements, which are part of property law, a field within the legal discipline. Property rights form the basis of contractual rights, enabling individuals to enter into agreements with others concerning the use of their property. This creates a legal framework providing recourse through the legal system in the event of disputes or breaches. In real estate, not all restrictions are imposed by the government; land developers also set their own, through restrictive covenants and easements. Restrictive covenants are rules and guidelines placed on property by a developer to maintain a certain standard or aesthetic in a subdivision, while easements are rights granted to non-owners to use land for a specific purpose.
Both are forms of non-government restrictions that govern land use and can have significant implications for property owners and leaseholders.