However, it was not always positive. The conquest reduced the indigenous population through the transmission of disease of the animals. Diseases were transferred from Europeans to indigenous Americans such as measles, influenza, chickenpox, smallpox, yellow fever, and malaria. According to Crosby, “the migration of man and his maladies is the chief cause of epidemics. And when migration takes place, those creatures who have beer genetic material has been least tempered by the variety of world diseases”. As Darwin mentioned in the book, the population declined immediately after large numbers of diseases transmitted from Europe to the new world. The population was devastated greatly when Cortes arrived in 1519. Since the indigenous people had no prior exposure to these kind of diseases, so they are greatly susceptible to this kind of deadly diseases. The spread of disease was rapid because it was communicable by air. That is the reason why indigenous people are easily affected by this kind of diseases. There are some other factors cause the decrease of population, such as because of their immune system had no past exposure and the isolation of indigenous people before the Europeans arrived, and also, the slave trade can be a factor of the fall of the
However, it was not always positive. The conquest reduced the indigenous population through the transmission of disease of the animals. Diseases were transferred from Europeans to indigenous Americans such as measles, influenza, chickenpox, smallpox, yellow fever, and malaria. According to Crosby, “the migration of man and his maladies is the chief cause of epidemics. And when migration takes place, those creatures who have beer genetic material has been least tempered by the variety of world diseases”. As Darwin mentioned in the book, the population declined immediately after large numbers of diseases transmitted from Europe to the new world. The population was devastated greatly when Cortes arrived in 1519. Since the indigenous people had no prior exposure to these kind of diseases, so they are greatly susceptible to this kind of deadly diseases. The spread of disease was rapid because it was communicable by air. That is the reason why indigenous people are easily affected by this kind of diseases. There are some other factors cause the decrease of population, such as because of their immune system had no past exposure and the isolation of indigenous people before the Europeans arrived, and also, the slave trade can be a factor of the fall of the