All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Tuesday 6 December 1921 1
1921Anglo-Irish Treaty signedTreaty establishes the Irish Free StateIrish and British delegations signed the Anglo-Irish Treaty in London, ending the War of Independence and creating the Irish Free State as a self-governing dominion. Six northern counties retained the option to remain part of the United Kingdom, which they exercised. The treaty's terms split the Irish nationalist movement and led to civil war the following year.