Inca road system: Did you mean...?

An illustration of the solar system by Martin Kornmesser. From The International Astronomical Union.

An Inca circular terracing used to increase agricultural yield. Moray, Peru, 15-16th century CE.

Inca qollqa (storehouses) used for storing grain and other foodstuffs. 15-16th century CE, Ollantaytambo.

Typical imperial Inca trapezoid windows from the sacred precinct of Coricancha, Cuzco, c. 1438 CE.

A colonial-era illustration depicting Inca farmers using traditional tools such as the foot plough. By the native chronicler Felipe Guaman Poma de Ayala, c. 1613 CE.

This documentary video describes the onset of the Han Empire in ancient Chinese history.

The Silk Road was a network of trading routes that connected a number of different regions in the ancient world, stretching over four thousand miles from China, through India and Asia Minor and through Mesopotamia and the African continent...

Construction of the Dujiangyan irrigation system began in the 3rd century B.C. This system still controls the waters of the Minjiang River and distributes it to the fertile farmland of the Chengdu plains. Mount Qingcheng was the birthplace...

View full lesson: https://ed.ted.com/lessons/how-the-world-s-first-subway-system-was-built-christian-wolmar It was the dawn of 1863 CE, and London's not-yet-opened subway system — the first of its kind in the world — had the city in an...

Historians and experts examine the American system of racialized slavery and the hypocrisy it relied on to function.