and dated September 2018. (4) Monument The term Monument means the Medgar and Myrlie Evers Home National Monument established by subsection (b). (5) Secretary The term Secretary means the Secretary, acting through the Director of the National Park Service. (b) Establishment (1) In general Subject to paragraph (2), there is established the Medgar and Myrlie Evers Home National Monument in the State of Mississippi as a unit of the National Park System to preserve, protect, and interpret for the benefit of present and future generations resources associated with the pivotal roles of Medgar and Myrlie Evers in the American Civil Rights Movement. (2) Determination by the secretary The Monument shall not be established until the date on which the Secretary determines that a sufficient quantity of land or interests in land has been acquired to constitute a manageable park unit. (c) Boundaries The boundaries of the Monument shall be the boundaries generally depicted on the Map. (d) Availability of map The Map shall be on file and available for public inspection in the appropriate offices of the National Park Service. (e) Acquisition authority The Secretary may only acquire any land or interest in land located within the boundary of the Monument by— (1) donation