The Persian Empire was an empire that stretched from India to Europe from 550 B.C.E. to 331 B.C.E. It was ruled by a series of monarchs. An empire is defined as a geographically extensive set of states or peoples that are ruled either by a monarch or by an oligarchy, a small group of ruling elites.
His goals were to find the Seven cities of gold. His expedition was labeled as a failure by Spanish Colonial authorities. He returned to Mexico and died in 1954.