As part of Great Britain the residents of Northern Ireland would have found out the same as the rest of the UK; via the radio & the prime minister's speech (WW2)
northern Ireland, Ireland, and Britain
The Good Friday Agreement (reached in 1998) was meant to improve relations between Northern Ireland and the Republic of Ireland.
Great Britain - is the largest of the British Isles. It incorporates the countries of England, Scotland and Wales. Northern Ireland is on the island of Ireland - west of Great Britain.
The Irish Sea
Great Britain is comprised of England, Scotland and Wales. When Northern Ireland is included, the country then gets its full title of 'The United Kingdom of Great Britain and Northern Ireland'.
England, Scotland and Wales make up the island of Great Britain. They are all part of the country : The United Kingdom of Great Britain and Northern Ireland. England, Scotland and Wales (and Northern Irelend) are generally referred to as its constituent countries.
There is no political relationship between Britain and the Republic of Ireland. Both are independent countries with their own governments. However, Northern Ireland, within province of Ulster, is an integral part of the United Kingdom of Great Britain and Northern Ireland. Ireland and Britain have strong diplomatic relations and generally a good relationship now, compare to other times in their history, when Ireland was under British rule.
You are confusing Britain with the United Kingdom, which are not the same things. Britain is an island that consists of England, Scotland and Wales. Northern Ireland is not part of Britain. It is on the island of Ireland. It is part of the United Kingdom though, which consists of England, Scotland, Wales and Northern Ireland. Between 1801 and 1922, all of the island of Ireland was part of the United Kingdom. Then most of Ireland became independent and the part that then became known as Northern Ireland stayed part of the United Kingdom.
Great BritainThere is currently a Power-sharing arrangement between the two major Ethno-Religious groupings in Northern Ireland and the Republic of Ireland now holds greater influence over decision making there.
During World War I and World War II, the people of Northern Ireland experienced a mix of emotions regarding Great Britain's war with Germany. Many felt a strong sense of loyalty and patriotism towards Britain, viewing the war as a fight for democracy and security. However, there were also feelings of anxiety and fear due to the potential danger of conflicts and the loss of life. Additionally, divisions between unionist and nationalist communities sometimes intensified, impacting sentiments towards the war and its implications for Northern Ireland's identity.
United Kingdom includes Northern Ireland.
Ireland is not in England, The island of Ireland is located west to the island of Great Britain (which is made up of England, Wales and Scotland). The Island of Ireland is separated into two countries the Republic of Ireland and Northern Ireland. Northern Ireland is part of the United Kingdom (which is Northern Ireland, England, Scotland, Wales)