Largest fortress,First hairsprings for watches..

1. Wind becomes hurricane at 73 miles per hour(1 mph= 1.6 km/h).
2. The word Hong Kong means Fragrant Habour.
3. In Meteorology the Torro scale measures Tornadoes.
4. Europe's largest fortress is Kremlin in Moscow.
5. The Sun is 330,000 times larger than the Earth.(accept within 10 per cent)
6. The patron saint of France is St Denis.
7. If the air is supersaturated it would have more than 100 % humidity.
8. Britain's first PM was Robert Walpole.
9. The first hairsprings for watches were made from Pig's hair.
10. In the nineteenth century China used bamboo as money.