Complex sentence: In 1598, Spanish conquistador Don Juan De Oñate, under orders from the King of Spain, invaded New Mexico, and began staging raids on Native American pueblos in the area, taking anything of value.
Split into simpler sentences: In 1598, the Spanish conquistador Don Juan De Oñate, under orders from the King of Spain, invaded present-day New Mexico. He raided the Native American pueblos in the area, with his troops taking anything of value.