premise: The Californias, or Province of the Californias, or Spanish: Las Californias, Provincia de las Californias (1768–1804), was the northwestern-most area of the Viceroyalty of New Spain (comprising Spain's colonial possessions in the Western Hemisphere and Pacific Spanish East Indies).
hypothesis: They were the furthest west of Spain's colonies,
reason: We know they were the northwesternmost, but not that they were also the furthest west. The system probably doesn't understand the difference!