Coins minted in the Year 1915

What happended in 1915?
The Monarch is King George V. Prime Minister is H. H. Asquith (Liberal, then Coalition from 25 May). US President is Woodrow Wilson (D-New Jersey). World War I gains pace, sadly with many atrocities. German Zeppelins bomb UK cities and towns. RMS Lusitania sunk on passage from New York to Britain by a German U-boat killing 1,198.