GENERAL KNOWLEDGE

Detailed explanation-1: -Smallpox was the disease brought by Europeans that was most destructive to the Native Americans, both in terms of morbidity and mortality. The first well-documented smallpox epidemic in the Americas began in Hispaniola in late 1518 and soon spread to Mexico.

Detailed explanation-2: -Though warfare and attacks on entire villages took a definite toll on the populations of Native Americans, disease was by far the biggest killer.

Detailed explanation-3: -Europeans had spent more time living in close proximity to one another and with animals. This meant that had been more opportunities for diseases to evolve in European society than in the Americas, hence the assymetry.