7 events in history on 1st May

1. 1328 - Scottish Wars of Independence end
2. 1707 - Kingdom of Great Britain formed
3. 1786 - Opening night of 'The Marriage of Figaro' in Vienna, Austria
4. 1834 - Slavery abolished in the British colonies
5. 1840 - The Penny Black, the first adhesive postage stamp was issued in Britain
6. 1869 - The Folies Bergère opens in Paris
7. 1930 - The dwarf planet Pluto is officially named