The Republic of Ireland has not officially been involved in any wars. However, their troops have faced combat situations during peacekeeping operations, such as the Congo Crisis. Otherwise, the Republic of Ireland has remained neutral. Irish volunteers did fight in the Boer Wars (both for the Boers and for the British), the First World War (all of Ireland was still a British territory at this time, and they served as members of the Royal Armed Forces), and the Spanish Civil War (with units composed of Irish personnel serving on both the Nationalist and Republican sides), but the only war an independent Irish government has been involved in was the Irish Civil War, during which time Ireland was independent - but not a Republic, as it is currently, but rather, a Free State of the British Commonwealth.
Ireland is a neutral country, so it has not been officially involved in any wars.
There have been many revolutions, a war of independence from 1919 to 1921 and a civil war in Ireland from 1922 to 1923.
Simply, because many people in Northern Ireland were being denied their civil rights, and so they and others went to support a movement that was trying to get them.
The biggest event of that type was the famine, that was in the 1840s. There have been some wars in Ireland that led to large amounts of death too.
Ireland is a neutral country and has not been officially involved in any wars. Irish citizens have joined other armies and fought in wars in different countries. There have also been wars in Ireland, most notably the Irish War of Independence and the Irish Civil War, both in the early 20th century.
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Ireland remained neutral.
Ireland has a long history, so there are many events in Irish history that relate to wars and revolutions. The 1916 Easter Rising is one of the most well known ones, but there are many others like the Battle of Clontarf, the Battle of the Boyne, the War of Independence, the Irish Civil War, the 1798 Rebellion, the Siege of Derry and many, many others.
No. Ireland was not invaded by Germany in either of the two world wars. However, a few bombs were dropped on Ireland, some believed to be accidental.
Ireland has lots of trees, because it has the kind of environment that can support them. At one time very large areas of Ireland were covered in trees. There is still a lot of forest in Ireland.
There have been wars in Ireland, most notably the War of Independence and the Irish Civil War, both of which happened in the 1920s.
Many wars have occurred in Ireland. Various tribes in Ireland were constantly at war until the Island was conquered by the Puritans in the 1650s. When James I became King of England he moved a number of Protestants to Northern Ireland. In order to defend themselves agains the Irish they created the stockade. A number of these settlers then went to Jamestown in the Virginia colony and brought the stockade with them. That fortification created in Northern Ireland enabled the colony to survive against Indian attacks and it enabled Americans to spread west across the nation.