While investigating the impact of Eurasian diseases in the Americas, which of the following would a historian have a difficult time determining? (1 point)

• the impact of smallpox on the body
• the percentage of deaths
• the connection between disease and Spanish conquest
• the types of disease

A historian would have a difficult time determining the impact of smallpox on the body. This is because the focus of a historian's research is typically on the larger societal and historical implications of events and phenomena, rather than microscopic analysis of specific diseases on an individual level. The impact of smallpox on the body would be better understood by medical professionals or experts in the field of epidemiology.