Complex sentence: The wine industry was first founded by the Californios, colonial Spanish settlers planted grapes and vineyards well-suited for the climate, then was adapted by Anglo-American settlers and European immigrants from Spain, Italy and France in the late 19th and early 20th centuries.
Split into simpler sentences: The wine industry was founded by the Californios; colonial Spanish settlers planted grapes and vineyards well-suited for the climate. The vineyards were then adapted by Anglo-American settlers and European immigrants from Spain, Italy and France in the late 19th and early 20th centuries.