How civil war and disease weakened the Inca before conquest

The Inca were already weakened when the Spanish arrived

Before the Spanish conquest, a war between Huáscar and Atahualpa had split the Inca Empire. Diseases that had spread from Central America weakened it further. One outbreak in the 1520s may have killed Emperor Huayna Capac and many other people.

Rome's first sundial showed the wrong time for 100 years

100 years

Rome took a sundial from Sicily in 264 BC and installed it without adjusting it for Rome's different latitude. It showed the wrong time for a century before the mistake was finally recognized in 164 BC.

Uneven old windows were made that way

Uneven glass in old windows is not evidence that it slowly flowed downward; the irregularities were already present when the panes were made. A study of medieval glass estimated a flow rate of only 1 nanometre per billion years at room temperature.

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How civil war and disease weakened the Inca before conquest

The Inca were already weakened when the Spanish arrived

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