After 25 years of fighting with the British, the IRA announced a ceasefire on Britain.
Britain fitted the first-ever battery-operated heart in the first operation of its kind.
Bahrain declared independence from Britain.
The Blitz began.
Adolf Hitler made plans to invade Britain starting on September 21, 1940.
The Defence of the Realm Act was introduced in Britain.
The Ballot Act was passed in Great Britain.
Britain took power over the Indian government.
The United States and Great Britain signed the Treaty of Paris, ending the Revolutionary war.
A great ball of fire was witnessed over the east coast of Great Britain.
The United States of America declared its Independence from Britain.
Great Britain and its colonies spent their last day using the Julian calendar.