History of Ireland & the UK: From Conflict to Peace

Ireland & the UK in the 20th Century

From Conflict to Peace

A History of Division, Independence, and Reconciliation

The Irish War of Independence

Irish nationalists vs. British forces under the IRA

~500 killed by end of 1920

~1,000 more deaths in first half of 1921

~6,000 republicans imprisoned

IRA faced shortages of manpower, weapons & ammunition

Truce reached: July 11, 1921

Peace talks began in London.

The Easter Rising escalated into a full guerrilla war for independence.

The Anglo-Irish Treaty & Partition of Ireland

Signed: December 6, 1921

Irish Free State

26 counties

Dominion status within British Empire

Oath of allegiance to the British Crown

Northern Ireland

6 Protestant counties (Province of Ulster)

Remained part of the United Kingdom

The Road to Full Independence (1937–1949)

1937

New Constitution Adopted

State renamed "Éire" (Ireland), British monarch removed from internal law, became republic in all but name.

1949

Republic of Ireland Act

Ireland formally declared a republic, severing all final existing ties with the British Commonwealth.

The Troubles

Late 1960s – 1970s

Origins

Started as a civil rights movement where Catholics (nationalists) protested systemic discrimination in jobs, housing, and voting.

Escalation

Erupted into violent paramilitary campaigns, riots, and bombings between the IRA and loyalists, leading to the deployment of the British Army.

Deadlock

The UK struggled to enforce control, while the IRA could not compel unification, leading to a protracted and brutal stalemate.

Bloody Sunday

January 30, 1972

British soldiers opened fire on unarmed civil rights protesters. This profound escalation dramatically fueled IRA support and intensified the violence across the region.

The Anglo-Irish Agreement

A Turning Point — 1985

Gave the Irish government a formal role in Northern Ireland affairs

Improved cooperation between Ireland and the UK

Both sides began working TOGETHER instead of against each other

Set the stage for peace talks and ceasefires in the 1990s

For the first time, Ireland and the UK chose cooperation over conflict.

The Good Friday Agreement

Belfast Agreement — April 10, 1998

Power-Sharing Government

Nationalists and Unionists actively working together in a unified assembly.

Identity Choice

People could freely choose to identify as British, Irish, or both.

Peaceful Resolution

The future of Northern Ireland to be decided by the people, not violence.

End of 30-Year Conflict

Paved the way for lasting peace and stability between Ireland and the UK.

Signed by British & Irish governments and Northern Irish political groups.

A Century of Change

Ireland & the UK: From Conflict to Peace

1919

War of Independence

1921

Anglo-Irish Treaty & Partition

1937

New Constitution (Éire)

1949

Republic of Ireland

1969

The Troubles Begin

1972

Bloody Sunday

1985

Anglo-Irish Agreement

1998

Good Friday Agreement

A relationship shaped by struggle, division, and ultimately — reconciliation.