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The compass was invented in China during the Han dynasty between the 2nd century BC and 1st century AD where it was called the "south-governor" (sīnán 司南) or "South Pointing Fish" (指南魚). [3] The magnetic compass was not, at first, used for navigation, but for geomancy and fortune-telling by the Chinese.
A lodestone compass was used in China during the Han dynasty between the 2nd century BC and 1st century AD, where it was called the "south-governor" (sīnán 司南). [14] The earliest reference to a magnetic device used for navigation is in a Song dynasty book dated to 1040–1044, where there is a description of an iron "south-pointing fish ...
With the establishment of the Qin dynasty in 221 BCE, the First Emperor unified the country and abolished the fengjian system, consolidating a new system of administrative divisions called the junxian system (郡縣制, "commandery-county system") or prefectural system, with the establishment of thirty-six prefectures and a rotational system ...
The compass was then used from the 11th century during the Song dynasty, Yuan dynasty, Ming dynasty, and Qing dynasty in the study of geography. One of the most famous explorers in Chinese history was the 15th century admiral Zheng He , known for the Chinese exploration of the Pacific and his treasure voyages .
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 February 2025. Imperial dynasty in China (202 BC – 220 AD) "Eastern Han" and "House of Liu" redirect here. For the Five Dynasties-era kingdom, see Northern Han. For other uses, see House of Liu (disambiguation). Han 漢 202 BC – 9 AD; 25–220 AD (9–23 AD: Xin) The Western Han dynasty in 2 AD ...
A directorial republic is a government system with power divided among a college of several people who jointly exercise the powers of a head of state and/or a head of government. Merchant republic: In the early Renaissance, a number of small, wealthy, trade-based city-states embraced republican ideals, notably across Italy and the Baltic.
The imperial system fell apart after the fall of Qin in 206 BC. However, following Han's victory over Chu, the King of Han reestablished the imperial system and is known posthumously as Emperor Gaozu (r. 202–195 BC). [9] The Han system of imperial government borrowed many of its core features from the regime established by the Qin dynasty.
A canal lock system in modern-day France which uses the pound lock system developed during the Song dynasty. In ancient China, the sluice gate, the canal lock, and flash lock had been known since at least the 1st century BCE (as sources then alluded that they were not new innovations), during the ancient Han dynasty (202 BCE–220 CE). [67]