Epidemic diseases are not a new phenomenon. Throughout human history, societies and civilizations have battled disease and sickness. The more infamous epidemics are well-known: the Black Plague, the Spanish Flu, and COVID-19. As notorious and deadly as these diseases were, at no other time has disease played such a destructive and influential role than in Europeans' colonization of the Americas from the 15th to the 16th century. Keep reading to learn more about the impact of diseases in the Columbian Exchange, their significance, and more.
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Jetzt kostenlos anmeldenEpidemic diseases are not a new phenomenon. Throughout human history, societies and civilizations have battled disease and sickness. The more infamous epidemics are well-known: the Black Plague, the Spanish Flu, and COVID-19. As notorious and deadly as these diseases were, at no other time has disease played such a destructive and influential role than in Europeans' colonization of the Americas from the 15th to the 16th century. Keep reading to learn more about the impact of diseases in the Columbian Exchange, their significance, and more.
Even though Spain arrived in the territory of the Aztecs with metal armor, cannons, horses, and military tactics to match, they were outnumbered by a civilization that housed the most populous city in the world at that time, Tenochtitlan.
The greatest killer was smallpox, which was spread by direct human contact.
Except for children, most Europeans and their enslaved people had had smallpox and were at least partially immune. Few adults sailed from Europe to America in the first decades after discovery. The voyage took several weeks, so even if an immigrant or sailor contracted smallpox before they set sail, they would most likely be dead or rid of the virus before landfall in the Americas.
The epidemic that hit the Aztec capital of Tenochtitlan in 1520 had begun on the island of Hispaniola two years earlier and had spread through Mexico, Central America, and South America. One of the reasons the Spanish conqueror Pizarro took over the Incan Empire so quickly was that disease had annihilated their society just before his arrival. Smallpox was not the only disease to kill off thousands of native peoples; influenza, measles, and other illnesses added to the destruction of native society.
The table below lists the diseases exchanged between the Old World and the New World after the first contact between Europeans and the indigenous peoples of the Americas.
Significant Viral Contributions of the Columbian Exchange | |
Old World | New World |
Smallpox Measles Bubonic Plague Influenza Chickenpox Malaria Yellow Fever Typhoid Fever Typhus Whooping Cough Cholera Diphtheria Scarlet Fever | Syphilis |
The exchange of diseases was not one-sided. The Americans gave Europeans syphilis. The first recorded case of syphilis in Europe occurred in Spain in 1493, shortly after Columbus’s return. Although less deadly than the diseases exchanged in the Americas, syphilis was more virulent in the 1500s than today, and adequate treatment was unknown.
The map below shows the Old World and New World origins of the diseases exchanged between Europe, Asia, Africa, and the Americas.
The statistics of the Old-World diseases and their impact on the Americas, even the conservative estimates, are staggering.
The significance of this exchange is difficult to understate. From the first contact with the voyages of Christopher Columbus to the mid-1600s, eighty-five to ninety-five percent of the indigenous populations of the Americas are gone. Though European nations wage military campaigns to take land and resources from these peoples, the diseases and sicknesses Europeans introduced do most of the damage. Entire civilizations will collapse, and cultures will disappear under the burden of epidemics due to population loss. It is the closest thing to what human extinction may look like for historians and anthropologists to study.
If indigenous civilizations and societies did survive, what is left is usually a remnant of what the culture used to be. The diseases made these societies relatively easy to conquer militarily, as the needed manpower for defense or warfare was nonexistent or depleted. It made communities more susceptible to cultural influence and change as oral and written histories were lost to the surviving generations, opening them to the pressures of conversion and assimilation into the dominant European culture.
One significant unintended consequence of the spread of disease is its influence on the early Atlantic slave trade. As indigenous populations were not immune to disease, European nations did not have a local source of enslaved labor. This lack of labor allowed colonial powers to enter the African slave markets to meet the labor demands in their American territories, as Africans were immune to Old World diseases.
The disease is the most significant biological exchange between the New and Old Worlds. Through death and epidemic, it either completely removed or changed indigenous societies in the Americas. Creating a pathway of least resistance for European nations to colonize, exploit, and control two continents
The greatest killer was smallpox The epidemic that hit the Aztec capital of Tenochtitlan in 1520 had begun on the island of Hispaniola two years earlier and had spread through Mexico, Central America, and South America. One of the reasons the Spanish conqueror Pizarro took over the Incan Empire so quickly was that disease had decimated their society before his arrival.
The significance of this exchange is difficult to understate. From the first contact with the voyages of Christopher Columbus to the mid-1600s, eighty-five to ninety-five percent of the indigenous populations of the Americas had been extinguished. Though European nations wage military campaigns to take land and resources from these peoples, it is the diseases, and sicknesses Europeans introduced that do most of the damage. Entire civilizations will collapse, and cultures will disappear under the burden of epidemics due to population loss. It is the closest thing to what human extinction may look like for historians and anthropologists to study.
The statistics of the Old World diseases and their impact on the Americas, even the conservative estimates, are staggering. When Columbus landed in Hispaniola in 1492, about one million native peoples resided there. Fifty years later, only 500 were still alive. According to some estimates, five to ten million natives inhabited central Mexico before Cortez and the Spanish. By the end of the 1500s, fewer than one million remained. From the first contact with the voyages of Christopher Columbus to the mid-1600s, eighty-five to ninety-five percent of the indigenous populations of the Americas will be gone.
Influenza is an Old World disease that was spread to the Americas
Columbian exchange diseases:
What is the approximate percentage of indigenous peoples in the Americas who died due to disease brought by Europeans?
85-95 Percent
______ is the disease introduced by Europeans that caused the greatest impact on the indigenous peoples of America.
Smallpox
Why was smallpox so contagious to those not immune?
It spread through human-to-human contact.
Which of the following was not a disease introduced to the New World by Europeans?
Syphilis
Which disease was brought back to the Old World from the Americas that had the most significant impact?
Syphilis
What two major American civilizations collapsed influenced by the rapid spread of smallpox that coincided with the Spanish invasion?
The Aztec and the Inca
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