1863, the first trains of the London underground, 1872, Yellowstone - the first national park in the world, 1885, Banff - the first national park in Canada, 50, the stars on the US flag, 13, the stripes on the US flag, about 5,000 years, the age of Stonehenge, over 550 metres, the height of the CN Tower, about 100 million, cups of tea British people drink every day.

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