INDIAN GEOGRAPHY

Detailed explanation-1: -A practical demonstration of Earth’s sphericity was achieved by Ferdinand Magellan and Juan Sebastián Elcano’s circumnavigation (1519–1522).

Detailed explanation-2: -Isaac Newton first proposed that Earth was not perfectly round. Instead, he suggested it was an oblate spheroid-a sphere that is squashed at its poles and swollen at the equator.

Detailed explanation-3: -In 1543, Nicolaus Copernicus detailed his radical theory of the Universe in which the Earth, along with the other planets, rotated around the Sun. His theory took more than a century to become widely accepted.