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.
Directly following Columbus' journey westward in 1492, Spain began an aggressive path of conquest. From that point onward, the Spaniards conquered most of the Americas; native cultures such as the Taino, Aztec, Maya, and native Peruvians were completely destroyed. The brutal Spanish hegemony continued until 1697.