Answer:
German Inventor Karl von Drais is credited with developing the first bicycle. His machine, known as the "swiftwalker," hit the road in 1817. This early bicycle had no pedals, and its frame was a wooden beam. The device had two wooden wheels with iron rims and leather-covered tires
Intresting question though
The best way to determine the authors point of view when researching for a thesis paper is to think of what he wanted to say by checking the whole paper and perhaps his recent history of publication. This will give you a good idea what did the author mean by some things he wrote.
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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