Misc: What is the 'pound' or 'number' symbol on the telephone?

Questions

Battle of Angora (Ankara)-Tatars defeat Turkish Army.?

King Louis XVI caught trying to escape French Revolution.?

Queen Victoria at 18 ascends British throne following death of uncle King William IV. She ruled for 63 years until 1901.?

King William IV of England, dies.?

Jean Moulin hero of the French Resistance during WW II, born.?