The government of Puerto Rico may assist slum clearance and urban redevelopment projects and urban renewal projects through cash donations, loans, conveyances of real and personal property, facilities, and services, and otherwise, and may authorize municipalities or other political subdivisions to make cash donations, loans, conveyances of real and personal property to public corporate authorities and to take other action, including but not limited to the making available or the furnishing of facilities and services, in aid of slum clearance and urban redevelopment projects and urban renewal projects.