Final answer:
Rio Negro means "rich New Mexicans" in Spanish and refers to a region in the historical New Mexico colony.
Explanation:
Rio Negro is Spanish for "rich New Mexicans." During the Spanish era, the New Mexico colony was divided into two regions: Rio Arriba (the upper river) and Rio Abajo (the lower river). Rio Arriba encompassed the New Mexico territory north of Santa Fe along the Rio Grande.
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