Porcine reproductive and respiratory syndrome virus. For the Marvel Comics Superhero, see Blue Ear (comics). Porcine reproductive and respiratory syndrome virus (PRRSV) is a virus that causes a disease of pigs, called porcine reproductive and respiratory syndrome (PRRS), also known as blue-ear pig disease (in Chinese, zhÅ« lÃ¡nÄr bÃ¬ng è±¬èè³ç).
Spanish: Enslaved Africans in Mexico, 1537 (PDF) Europeans' enslavement of Native Americans began with Columbus. As the governor of Hispaniola, he forced the Taino Indians to labor in the Spanish fields and mines, and he brought Taino slaves to Spain on his return journeys.
Print this map. In 1502, Nicaragua was inhabited by over a million indigenous Indians when Christopher Columbus stopped briefly along its Caribbean coastline. Twenty years later the Spanish had established permanent settlements here in their on-going colonization efforts across the Americas.