7th January » Dáil Éireann ratifies the Anglo-Irish Treaty by a 64-57 vote.
10th January » Arthur Griffith is elected President of the Dáil Éireann.
11th January » First use of insulin to treat Diabetes mellitus called diabetes in a human patient.
2nd February » 'Ulysses (novel) known as Ulysses' by James Joyce is published.
6th February » The Washington Naval Treaty is signed in Washington, D.C., limiting the naval armaments of United States, British Empire named Britain, Japan, France, and Italy.
8th February » President of the United States known as President Warren G. Harding introduces the first radio in the White House.
9th February » Brazil becomes a member of the Berne Convention for the Protection of Literary and Artistic Works e.g Berne Convention copyright treaty.
27th February » A challenge to the Nineteenth Amendment to the United States Constitution, allowing women the right to vote, is rebuffed by the Supreme Court of the United States in 'Leser v. Garnett'.
28th February » The United Kingdom ends its protectorate over Egypt through a Unilateral Declaration of Egyptian Independence known as Unilateral Declaration of Independence.
10th March » Mahatma Gandhi is arrested in India, tried for sedition, and sentenced to six years in prison, only to be released after nearly two years for an appendicitis operation.
12th March » Armenia, Georgia and Azerbaijan formed The Transcaucasian Socialist Federative Soviet Republic
15th March » After Egypt gains nominal independence from the United Kingdom, Fuad I of Egypt or Fuad I becomes King of Egypt.
18th March » In India, Mohandas Gandhi is sentenced to six years in prison for civil disobedience. He serves only 2 years.
20th March » The USS named Langley or CV-1 is commissioned as the first United States Navy aircraft carrier.
24th March » Irish War of Independence: In Belfast, Northern Ireland known as Northern Irish policemen break into the home of a Catholic family and McMahon murders called shoot all eight males inside.
1st April » Six Irish Catholic civilians Arnon Street killings known as are shot and beaten to death by a gang of policemen in Belfast, Northern Ireland.
3rd April » Joseph Stalin becomes the first General Secretary of the Communist Party of the Soviet Union.
5th April » The American Birth Control League, forerunner of Planned Parenthood, is incorporated.
7th April » Teapot Dome scandal: United States Secretary of the Interior leases Teapot Dome petroleum reserves in Wyoming.
15th April » U.S. Senator John B. Kendrick of Wyoming introduces a resolution calling for an investigation of secret land deal, which leads to the discovery of the Teapot Dome scandal.
16th April » The Treaty of Rapallo, 1922 or Treaty of Rapallo, pursuant to which Weimar Republic known as Germany and the Soviet Union re-establish diplomatic relations, is signed.
20th April » The Soviet Union e.g Soviet government creates South Ossetian Autonomous Oblast within Georgian SSR.
24th April » The first segment of the Imperial Wireless Chain providing wireless telegraphy between Leafield in Oxfordshire, England, and Cairo, Egypt, comes into operation.
10th May » The United States annexes the Kingman Reef.
19th May » The Young Pioneer Organization of the Soviet Union is established.
30th May » The Lincoln Memorial is dedicated in Washington, D.C..
1st June » The Royal Ulster Constabulary is founded.
16th June » General election in the Irish Free State: the pro-Treaty History of Sinn Féin e.g Sinn Féin win a large majority.
22nd June » Herrin massacre: 19 strikebreakers and 2 union miners are killed in Herrin, Illinois.
28th June » The Irish Civil War begins with the shelling of the Four Courts in Dublin by Irish Free State named Free State forces.
29th June » France grants 1 km² at Vimy Ridge "freely, and for all time, to the Government of Canada, the free use of the land exempt from all taxes".
30th June » In Washington D.C., U.S. Secretary of State Charles Evans Hughes and Dominican Ambassador Francisco J. Peynado sign the Hughes-Peynado agreement, which ends the United States occupation of the Dominican Republic (1916–1924) named United States occupation
1st July » The Great Railroad Strike of 1922 begins in the United States.
15th July » Japanese Communist Party is established in Japan.
20th July » The League of Nations awards mandates of Togoland to France and Tanganyika to the United Kingdom.
24th July » The draft of the Mandatory Palestine called British Mandate of Palestine was formally confirmed by the League of Nations Council or Council of the League of Nations; it came into effect on 26 September 1923.
2nd August » A 1922 Swatow typhoon known as typhoon hits Shantou, Taiwan or Republic of China killing more than 50,000 people.
22nd August » Michael Collins (Irish leader) known as Michael Collins, Commander-in-chief of the Irish Free State Army, is shot dead during an Irish Republican Army (1922–1969) known as Anti-Treaty ambush at Béal na Bláth, County Cork, during the Irish Civil War.
27th August » Greco-Turkish War (1919–22) called Greco-Turkish War: The Turkish army takes the Aegean Region or Aegean city of Afyonkarahisar from the Kingdom of Greece.
29th August » The first radio advertisement is broadcast on WNBC (AM) known as WEAF-AM in New York City.
30th August » Battle of Dumlupınar: The final battle in the Greco-Turkish War (1919–22) e.g Greco-Turkish War ("Turkish War of Independence").
7th September » In Aydın, Turkey, independence of Aydın, from Greek occupation.
7th September » The Bank of Latvia established.
9th September » The Greco-Turkish War (1919–22) or Greco-Turkish War effectively ends with Turkish victory over the Greeks in Smyrna.
11th September » The Treaty of Kars is ratified in Yerevan, Armenia.
13th September » The final act of the Greco-Turkish War (1919–22) named Greco-Turkish War, the Great Fire of Smyrna, commences.
18th September » Hungary is admitted to the League of Nations.
27th September » Constantine I of Greece called King Constantine I of Greece abdicates his throne in favor of his eldest son, George II of Greece e.g King George II.
18th October » The BBC called British Broadcasting Company (later Corporation) is founded by a consortium, to establish a nationwide network of radio transmitters to provide a national broadcasting service.
19th October » British Conservative Party (UK) Conservative Member of Parliament MPs meeting at the Carlton Club meeting Carlton Club vote to break off the Lloyd George ministry Coalition Government with David Lloyd George of the Liberal Party (UK) Liberal Party.
28th October » March on Rome: Italian fascists led by Benito Mussolini march on Rome and take over the Italian government.
29th October » King Victor Emmanuel III of Italy, appoints Benito Mussolini as Prime Minister.
30th October » Benito Mussolini is made Italian Prime Minister named Prime Minister of Italy.
31st October » Benito Mussolini is made Prime Minister of Italy
1st November » Abolition of the Ottoman Sultanate: The last sultan of the Ottoman Empire, Mehmed VI, abdicates.
14th November » The British Broadcasting Company or BBC begins radio service in the United Kingdom.
15th November » Over 1,000 are Anarchism in Ecuador The general strike of November 15.2C 1922 and the decline named massacred during a general strike in Guayaquil, Ecuador.
17th November » Former List of sultans of the Ottoman Empire e.g Ottoman sultan Mehmed VI goes into exile in Italy.
21st November » Rebecca Latimer Felton of Georgia (U.S. state) e.g Georgia takes the oath of office, becoming the first female United States Senate or United States Senator.
24th November » Nine Irish Republican Army members are Executions during the Irish Civil War The first executions and reprisals known as executed by an Irish Free State firing squad. Among them is author Robert Erskine Childers, who had been arrested for illegally carryi
26th November » Howard Carter (archaeologist) or Howard Carter and George Herbert, 5th Earl of Carnarvon called Lord Carnarvon become the first people to enter the tomb of Pharaoh Tutankhamun in over 3000 years.
26th November » 'Toll of the Sea' debuts as the first general release film to use two-tone Technicolor. ('The Gulf Between' was the first film to do so, but it was not widely distributed.)
6th December » One year to the day after the signing of the Anglo-Irish Treaty, the Irish Free State comes into existence.
9th December » Gabriel Narutowicz is elected the first president of Poland.
27th December » Japanese aircraft carrier Hōshō becomes the first purpose built aircraft carrier to be commissioned in the world.
30th December » The Soviet Union e.g Union of Soviet Socialist Republics Treaty on the Creation of the USSR or is formed.