Home Rule Crisis in the context of "Partition of Ireland"

The Home Rule movement (Irish: Rialtas Dúchais) was a movement that campaigned for self-government (or "home rule") for Ireland within the United Kingdom of Great Britain and Ireland. It was the dominant political movement of Irish nationalism from 1870 to the end of World War I.

Isaac Butt founded the Home Government Association in 1870. This was succeeded in 1873 by the Home Rule League, and in 1882 by the Irish Parliamentary Party. These organisations campaigned for home rule. The House of Commons of the United Kingdom introduced the First Home Rule Bill in 1886, but the bill was defeated in the House of Commons after a split in the Liberal Party. After Parnell's death, Gladstone introduced the Second Home Rule Bill in 1893; it passed the Commons but was defeated in the House of Lords. After the removal of the Lords' veto in 1911, the Third Home Rule Bill was introduced in 1912, leading to the Home Rule Crisis. Shortly after the outbreak of World War I it was enacted, but implementation was suspended until the conclusion of the war.

The Ulster Volunteers was an Irish unionist, loyalist paramilitary organisation founded in 1912 to block domestic self-government ("Home Rule") for Ireland, which was then part of the United Kingdom. The Ulster Volunteers were based in the northern province of Ulster. Many Ulster Protestants and Irish unionists feared being governed by a nationalist Catholic-majority parliament in Dublin and losing their links with Great Britain. In 1913, the militias were organised into the Ulster Volunteer Force (UVF) and vowed to resist any attempts by the British Government to impose Home Rule on Ulster. Later that year, Irish nationalists formed a rival militia, the Irish Volunteers, to safeguard Home Rule. In April 1914, the UVF smuggled 25,000 rifles into Ulster from Imperial Germany. The Home Rule Crisis was interrupted by the First World War. Much of the UVF enlisted with the British Army's 36th (Ulster) Division and went to fight on the Western Front.

After the war, the British Government decided to partition Ireland into two self-governing regions: Northern Ireland (which overall had a Protestant/unionist majority) and Southern Ireland. However, by 1920 the Irish War of Independence was raging and the Irish Republican Army (IRA) was launching attacks on British forces in Ireland. In response, the UVF was revived. It was involved in some sectarian clashes and minor actions against the IRA. However, this revival was largely unsuccessful and the UVF was absorbed into the Ulster Special Constabulary (USC), the new reserve police force of Northern Ireland.

Ulster loyalism is a strand of Ulster unionism associated with working class Ulster Protestants in Northern Ireland. Like other unionists, loyalists support the continued existence of Northern Ireland (and formerly all of Ireland) within the United Kingdom, and oppose a united Ireland independent of the UK. Unlike other strands of unionism, loyalism has been described as an ethnic nationalism of Ulster Protestants and "a variation of British nationalism". Loyalists are often said to have a conditional loyalty to the British state so long as it defends their interests. They see themselves as loyal primarily to the Protestant British monarchy rather than to British governments and institutions, while Garret FitzGerald argued they are loyal to 'Ulster' over 'the Union'. A small minority of loyalists have called for an independent Ulster Protestant state, believing they cannot rely on British governments to support them (see Ulster nationalism). The term 'loyalism' is usually associated with paramilitarism.

Ulster loyalism emerged in the late 19th century, in reaction to the Irish Home Rule movement and the rise of Irish nationalism. Ireland had a Catholic majority who wanted self-government, but the province of Ulster had a Protestant and unionist majority, largely due to the Plantation of Ulster. Although not all unionists were Protestant, loyalists emphasised their British Protestant heritage. During the Home Rule Crisis (1912–14), loyalists founded the paramilitary Ulster Volunteers to prevent Ulster from becoming part of a self-governing Ireland. This was followed by the Irish War of Independence (1919–21) and partition of Ireland: most of Ireland became an independent state, while most of Ulster remained within the UK as the self-governing territory of Northern Ireland. During partition, communal violence raged between loyalists and Irish nationalists in Belfast, and loyalists attacked the Catholic minority in retaliation for Irish republican activity.