The governing authority of any county or municipality, individually or jointly, is authorized to make appropriations to a historic preservation commission, in any amount that it may determine necessary for the expenses of the operation of such commission. A governing authority may apply to participate in the Certified Local Government Program of the National Park Service, which is administered in Mississippi by the Department of Archives and History and may on behalf of a local historic preservation commission apply for funding from the Department of Archives and History to supplement funds available from the governing authority itself. Said governing authorities shall not be empowered to acquire by eminent domain any historic preservation properties unless such properties are needed for governmental purposes other than historic preservation.