sentences:  After being rebuilt twice, the fort eventually closed in 1891, still without restitution to land-owners, despite the Kearny Code, Hidalgo Treaty, and other agreements supposedly guaranteeing continuity of Spanish and Mexican land-grant rights.New Mexico (with reduced land area) became the 47th US state on January 6, 1912, despite concerns in Congress that the population was insufficiently assimilated into American culture, especially after an influx of Mexican refugees from 1910 onward, fleeing the Mexican Revolution.These newcomers mostly settled far south of Mora County, though it remained primarily Spanish-speaking, as it was still largely populated by the same, now-expanded, families who had settled area three-quarters of a century earlier).