Should the certificate of public convenience and necessity be issued by the Mississippi Agricultural and Industrial Board the governing authority of such municipality shall call an election in the municipality and in the territory outside the municipality in the manner and method for calling, conducting and holding elections provided in Section 57-1-25, and should two-thirds of the qualified electors residing in the municipality and voting in the election, and two-thirds of the qualified electors residing in the territory outside the municipality forming a part of the municipal separate school district of which such territory and municipality are a part and voting in the election, vote in favor of the enterprise, such municipal separate school district including the municipality shall be deemed a municipality within the meaning of Sections 57-1-1 through 57-1-51, and shall have all rights, powers and authority to act by and through the governing authority of such municipality granted to municipalities as defined in Sections 57-1-1 through 57-1-51 and by said sections.