Which of the following best describes evidence used by Crosby to support his argument about the change in Native American populations after 1492 ? The Spanish sought to use Native Americans as laborers on encomiendas. The Spanish sought to use Native Americans as laborers on encomiendas. A Columbus trained Native Americans as translators and guides. Columbus trained Native Americans as translators and guides. B Native Americans who were taken to Europe as slaves experienced high mortality rates. Native Americans who were taken to Europe as slaves experienced high mortality rates. C Some diseases affecting Native Americans originated in the Americas.

According to Alfred W. Crosby Jr, a ate Professor of History, Geography, and American Studies at the University of Texas at Austin, Harvard University, in his book titled "The Columbian Exchange: Biological and Cultural Consequences of 1492," which was released in 1972.

In his attempt to support his argument about the change in the population of Native America in 1492, he described that Native Americans who were taken to Europe as slaves experienced high mortality rates and that, Native Americans had no immunity to new diseases introduced by Europeans.