What happened 1921 AD in United Kingdom

Keynes had completed his A Treatise on Probability before the war, but published it in 1921.

Churchill became Secretary of State for the Colonies in February 1921. The following month, the first exhibit of his paintings was held; it took place in Paris, with Churchill exhibiting under a pseudonym.

In June, Churchill's mother died, followed in August by his daughter Marigold.

On 10 July 1921, the IRA ambushed British forces in Raglan street in Belfast.

Du Bois traveled to Europe in 1921 to attend the second Pan-African Congress. The assembled black leaders from around the world issued the London Resolutions and established a Pan-African Association headquarters in Paris.[170] Under Du Bois's guidance, the resolutions insisted on racial equality, and that Africa be ruled by Africans (not, as in the 1919 congress, with the consent of Africans).

Shortly after Philip's birth, his maternal grandfather Prince Louis of Battenberg, then known as Louis Mountbatten, Marquess of Milford Haven, died in London. Louis was a naturalized British subject who, after a career in the Royal Navy, had renounced his German titles and adopted the surname Mountbatten—an Anglicised version of Battenberg—during the First World War, owing to anti-German sentiment in Britain. After visiting London for his grandfather's memorial service, Philip and his mother returned to Greece, where Prince Andrew had remained to command a Greek Army division embroiled in the Greco-Turkish War.

The Peace talks led to the negotiation of the Anglo-Irish Treaty (6 December 1921).

Churchill was involved in negotiations with Sinn Féin leaders and helped draft the Anglo-Irish Treaty.

Keynes had completed his A Treatise on Probability before the war, but published it in 1921.

Churchill became Secretary of State for the Colonies in February 1921. The following month, the first exhibit of his paintings was held; it took place in Paris, with Churchill exhibiting under a pseudonym.

In June, Churchill's mother died, followed in August by his daughter Marigold.

On 10 July 1921, the IRA ambushed British forces in Raglan street in Belfast.

Du Bois traveled to Europe in 1921 to attend the second Pan-African Congress. The assembled black leaders from around the world issued the London Resolutions and established a Pan-African Association headquarters in Paris.[170] Under Du Bois's guidance, the resolutions insisted on racial equality, and that Africa be ruled by Africans (not, as in the 1919 congress, with the consent of Africans).

Shortly after Philip's birth, his maternal grandfather Prince Louis of Battenberg, then known as Louis Mountbatten, Marquess of Milford Haven, died in London. Louis was a naturalized British subject who, after a career in the Royal Navy, had renounced his German titles and adopted the surname Mountbatten—an Anglicised version of Battenberg—during the First World War, owing to anti-German sentiment in Britain. After visiting London for his grandfather's memorial service, Philip and his mother returned to Greece, where Prince Andrew had remained to command a Greek Army division embroiled in the Greco-Turkish War.

The Peace talks led to the negotiation of the Anglo-Irish Treaty (6 December 1921).

Churchill was involved in negotiations with Sinn Féin leaders and helped draft the Anglo-Irish Treaty.