PRECIS
In the past men used to think that the earth was flat. Thousands of years ago the wise Greeks knew that it was not; hundreds of years ago men first sailed right round the earth in ships, almost proving that it was not. In the present century, it is very common for people to travel around the earth. Everyday airplanes arrive in Calcutta bringing passengers from Europe or America. Nearly every week steamers reach Bombay which are on journeys that may take them around the world. All these steamers go round the earth in an east-west direction, but it is also possible to go round in a north and south direction. That is much more difficult because it is necessary to pass through the very cold Arctic and Antarctic regions. Only a few explorers have been able to penetrate into the heart of those cold lands, but the aeroplane has opened up an easier way of crossing them.
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| Man's circumnavigation of the earth |
Answer:-
Man's circumnavigation of the earth
The Greeks only made a guess that the earth was round and not flat. They proved it by sailing around the earth, Today it is common to travel by ship around the world in an East-West trip. North-South trips around the world are difficult, but these to have been accomplished by airplanes.
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