Sections 11-17-19 through 11-17-27 shall be applicable to all sales, conveyances and leases of real property, other than sixteenth section school lands or lands granted in lieu thereof, made by any county, municipality, supervisor's district or other political subdivision of the State of Mississippi, acting either jointly or separately, to any person, firm or corporation, including, but not being limited to, sales, conveyances and leases made under the authority of Sections 57-1-1 through 57-1-51, any other statute of the State of Mississippi, whether same be general, special or local and private, and sales, conveyances and leases made under the general authority of counties, municipalities, and other political subdivisions, whether same were authorized by a specific statute or not.