; and (5) encourage, by appropriate means and consistent with the purposes of the National Heritage Area, the economic viability of the National Heritage Area. (c) Prohibition on the acquisition of real property The Local Coordinating Entity shall not use Federal funds made available under section 9 to acquire real property or any interest in real property. 5. Management plan (a) In general Not later than 3 years after the date of enactment of this Act, the Local Coordinating Entity shall prepare and submit to the Secretary for approval a proposed management plan for the National Heritage Area. (b) Requirements The management plan shall— (1) incorporate an integrated and cooperative approach for the protection, enhancement, and interpretation of the natural, cultural, historic, scenic, and recreational resources of the National Heritage Area; (2) take into consideration other applicable Federal, State, local, and Tribal plans and treaty rights; (3) include— (A) an inventory of— (i) the resources located in the National Heritage Area; and (ii) any other property in the National Heritage Area that— (I) is related to the themes of the National Heritage Area; and (II) should be preserved, restored, managed, or maintained because of the significance of the property; (B) comprehensive policies, strategies, and recommendations for the conservation, funding, management, and development of the National Heritage Area; (C) a description of activities that the Federal Government, State, Tribal, and local governments, private organizations, and individuals have agreed to carry out to protect the natural, historical, cultural, scenic, and recreational resources of the National Heritage Area; (D) a program of implementation for the management plan by the Local Coordinating Entity that includes a description of— (i) actions to facilitate ongoing collaboration among partners to promote plans for resource protection, restoration, and construction