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Strabo
A 16th century CE engraving depicting Strabo, the Greek geographer and historian (c. 64 BCE - c. 24 CE). (Potraits from the Dibner Library of the History and Science of Technology)

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Enigma Cypher Machine
An ENIGMA cypher machine, used by Nazi Germany during the Second World War to send coded communications. Unknown to the Germans, the Poles, French, and British deciphered the code. (Museum of Science and Technology, Milan)

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Signing of the Treaties of Alliance between the US and France, 1778
Signing of the Treaties of Alliance between the US and France in 1778, which led to France's entry into the American Revolutionary War. Reproduction of an oil on canvas painting by Charles Elliott Mills, c. 1900-1920. The original is in the...

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10th-century Equatorium
Equatorium of Jafar al-Khazin (900-971 CE).
Istanbul Museum of the History of Science and Technology in Islam.

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Mesopotamia
Mesopotamia (from the Greek, meaning 'between two rivers') was an ancient region located in the eastern Mediterranean bounded in the northeast by the Zagros Mountains and in the southeast by the Arabian Plateau, corresponding to modern-day...

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Ancient India
India is a country in South Asia whose name comes from the Indus River. The name 'Bharata' is used as a designation for the country in their constitution referencing the ancient mythological emperor, Bharata, whose story is told, in part...

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Ancient China
Ancient China produced what has become the oldest extant culture in the world. The name 'China' comes from the Sanskrit Cina (derived from the name of the Chinese Qin Dynasty, pronounced 'Chin') which was translated as 'Cin' by the Persians...

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Great Pyramid of Giza
The Great Pyramid of Giza is a defining symbol of Egypt and the last of the ancient Seven Wonders of the World. It is located on the Giza plateau near the modern city of Cairo and was built over a twenty-year period during the reign of the...

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Edo Period
The Edo period refers to the years from 1603 until 1868 when the Tokugawa family ruled Japan. The era is named after the city of Edo, modern-day Tokyo, where the Tokugawa shogunate had its government. It is also sometimes referred to as the...

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Genghis Khan
Genghis Khan (aka Chinggis Khan) was the founder of the Mongol Empire which he ruled from 1206 until his death in 1227. Born Temujin, he acquired the title of Genghis Khan, likely meaning 'universal ruler’, after unifying the Mongol tribes...