Complex sentence: Once the Indians had entered into this servitude, the term limit was often ignored, thus resulting in slavery; this was what Californians used to "satisfy the states high demand for domestic servants and agricultural laborers".
Split into simpler sentences: Once the Indians had entered into this servitude, the term limit was often ignored, thus resulting in essentially slavery. It was what Californians used to "satisfy the states high demand for domestic servants and agricultural laborers".