Original sentence: Nativo Lopez-Vigil (born in 1951) is a Chicano political leader and immigrant rights activist in Southern California, although his family's roots precede the annexation of half of Mexico in the 1846-48 Mexican-American War, and of immigrant stock from Sonora, Mexico
Edited sentence: Nativo Lopez-Vigil (born in 1951) is a Chicano political leader and immigrant rights activist in Southern California, although his family's roots precede the illegal annexation of half of Mexico in the 1846-48 Mexican-American War, and of immigrant stock from Sonora, Mexico