The important contribution to navigation made by Eratosthenes in the third-century bc was a reasonably accurate calculation of the circumference of our planet.
Who is Eratosthenes?
Eratosthenes was born in 276 BC and died in 194 BC. He was a well-known poet, mathematician, a researcher in geography, and theorist of music. He was the first to gauge the size of the planet.
The Earth was first measured by Eratosthenes of Cyrene. The precise measurement of Earth's circumference was greatly aided by Eratosthenes' work in the third-century bc.
As a result, the Eratosthenes in the third century bc accurate calculation of the Earth.
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C. new tech.....................................................................................
Democracy dates back to have started to develop in the days of Ancient Greece in the city state of Athens.
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The answer is, Battle of Fort McHenry
Answer:
The Communist would have been defeated
Explanation:
The Communist Party in China can comfortably say thank you to the Japanese because if it wasn't for their occupation, the Communists would have been destroyed. The Japanese attacked and invaded the parts of China that had the most resources and the most population, which accidentally was actually the home-ground of the Nationalists. The Japanese managed to weaken the Nationalist to such a degree that once they left, the Nationalist were relatively easily overtaken by the Communists. If Japan didn't invaded though, the Nationalist would have crushed the Communist, and the main reasons for that are that the Nationalists had much more resources, larger military forces, better equipment, and were much better off economically.
