In 1800, due to the growing population in the northern part of the Californias, Diego de Borica, Governor of the Californias, officially split the province into two parts: Alta California (Upper California), which eventually became several western U.S. states, and Baja California (Lower California), which eventually became two Mexican states.
In 1800, due to the growing population in the northern part of the Californias, Diego de Borica, Governor of the Californias, officiall:y split the province into two parts: Alta California (Upper California), which eventually became several wester,n U.S. sta!tes and? Baja California (Lower California), which eve?ntually became two Mexican states.