; (B) organizing a significant community-wide effort to keep the steel mills open after shutdowns were announced in the late 1970s; and (C) developing a nationally and internationally recognized model for community-based planning in response to the economic and social challenges of deindustrialization, including the Youngstown 2010 Plan and several on-going grassroots neighborhood organizations that have led important efforts to revitalize the community. (5) While many aspects of this community’s history reflect the unique mix of the people who came here and the history of industries in this Valley, the story of the Mahoning Valley Steelmaking District also reflects national patterns of industrial growth and change, migration and immigration, and cultural, civic, and labor organizing. 3. Definitions In this Act: (1) Local coordinating entity The term local coordinating entity means the Steel Valley National Heritage Area Commission established by section 5(a). (2) Management plan The term management plan means the management plan for the National Heritage Area required under section 6. (3) Map The term map means the map entitled Steel Valley National Heritage Area created by the Congressional Research Service. (4) National heritage area The term National Heritage Area means the Steel Valley National Heritage Area established by section 4(a). (5) Secretary The term Secretary means the Secretary of the Interior. (6) State The term State means the State of Ohio or the State of Pennsylvania, as appropriate. 4. Steel valley national heritage area (a) Establishment There is established in the State the Steel Valley National Heritage Area. (b) Boundaries (1) In general The National Heritage Area shall consist of land located in the Counties of Trumbull and Mahoning in Ohio, and Mercer and Lawrence Counties in Pennsylvania, as generally depicted on the map. (2) Revision The boundaries of the National Heritage Area established under paragraph (1) may be revised if the revision is— (A) proposed in the management plan