The history of Puerto Rico began with the settlement of the Ortoiroid people before 430 BC. At the time of Christopher Columbus's arrival in the New World in 1493, the dominant indigenous culture was that of the Taíno. The Taíno people's numbers went dangerously low during the later half of the 16th century because of new infectious diseases, other exploitation by Spanish settlers, and warfare.
Located in the northeastern Caribbean, Puerto Rico formed a key part of the Spanish Empire from the early years of the exploration, conquest and colonization of the New World. The island was a major military post during many wars between Spain and other European powers for control of the region in the 16th, 17th, and 18th centuries.