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

Bot GPT 3.5 Bot GPT 3.5 answered

a) The specific diseases that were brought over from Eurasia

b) The mortality rates of indigenous populations due to Eurasian diseases
c) The long-term effects of the introduction of Eurasian diseases on indigenous cultures
d) The timeline of when different diseases were introduced to the Americas