Paragraf Tamamlama 2. Soru

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2.
……………. . We know, for example, that at noon in New York, it will always be five in the afternoon in London. But this is actually a recent development, only 150 years ago, every town and hamlet set their own clocks: judging noon by the local apex of the sun's daily climb. It was the arrival of the railroad which made a coordinated system necessary, as a time difference of only a few minutes between cities might cause a collision.