Malaria could stop an army in its tracks. In 413 BC, at the height of the disastrous Sicilian Expedition, malaria sucked the life out of the Athenian army as it lay siege to Syracuse. Athens never recovered from its losses and fell to the Spartans in 404 BC.
But while malaria helped to destroy the Athenians, it provided the Roman Republic with a natural barrier against invaders. The infested Pontine Marshes south of Rome enabled successive generations of Romans to conquer North Africa, the Middle East and Europe with some assurance they wouldn’t lose their own homeland. Thus, the spread of classical civilization was carried on the wings of the mosquito. In the 5th century, though, the blessing became a curse as the disease robbed the Roman Empire of its manpower.
Throughout the medieval era, malaria checked the territorial ambitions of kings and emperors. The greatest beneficiary was Africa, where endemic malaria was deadly to would-be colonizers. The conquistadors suffered no such handicap in the New World.
Author(s): Amanda Foreman
Publication Date: 15 Oct 2021
Publication Site: WSJ