Unintended Consequences of the Columbian Exchange was the diseases that the Europeans brought over to the new world. Such ass smallpox and measles. The Native American people have never been exposed to any such disease. The native American had no immunity whatsoever and absolutely no medicine to treat for smallpox or measles. Illnesses that were mostly common to the people and sometimes treatable in Europe totally ravaged the population. Smallpox was the worst by far, the disease spread like nothing they had ever seen.
Smallpox most likely brought about the Plague of Athens in 430 B.C. later on killed an estimated 3.5 million to 7 million people, and created the decline of the Roman Empire. It reached Europe no later than the 6th century,
Smallpox most likely brought about the Plague of Athens in 430 B.C. later on killed an estimated 3.5 million to 7 million people, and created the decline of the Roman Empire. It reached Europe no later than the 6th century,