Ireland split from Northern Ireland due to historical and political reasons. The split occurred in 1921 when the Anglo-Irish Treaty was signed, leading to the creation of the Irish Free State (now the Republic of Ireland) and Northern Ireland as part of the United Kingdom. The split was a result of the Irish War of Independence and the desire for Irish independence from British rule. The predominantly Catholic population in Ireland sought independence and self-governance, while the predominantly Protestant population in Northern Ireland wanted to remain part of the United Kingdom. This division led to the establishment of separate governments and ultimately the split between Ireland and Northern Ireland. **

Ireland and the United Kingdom are two separate countries with distinct histories and governments. Ireland is an independent country, while the United Kingdom is a sovereign state made up of four countries: England, Scotland, Wales, and Northern Ireland. The United Kingdom has a constitutional monarchy with a parliamentary system, while Ireland is a republic with a parliamentary democracy. Additionally, Ireland uses the euro as its currency, while the United Kingdom uses the pound sterling. **

South Ireland left the United Kingdom in 1922 primarily due to the desire for independence and self-governance. The Irish War of Independence, which lasted from 1919 to 1921, resulted in a significant push for Irish independence from British rule. The Anglo-Irish Treaty of 1921 led to the establishment of the Irish Free State, which included most of the island of Ireland, and allowed for the creation of a separate government for South Ireland. This marked the end of direct British rule in South Ireland and the beginning of its independence. **

Ireland is known for its numerous rivers, with the longest being the River Shannon at 360.5 km. The River Shannon flows through the heart of the country, offering picturesque views and opportunities for activities like fishing and boating. Other notable rivers in Ireland include the River Barrow, River Suir, and River Liffey, all of which contribute to the country's natural beauty and provide habitats for a variety of wildlife. **

Ireland is home to many rivers, with the longest being the River Shannon at 360.5 km. The River Shannon is an important waterway for transportation and tourism in Ireland. Other notable rivers in Ireland include the River Barrow, River Suir, and River Liffey, all of which play a significant role in the country's landscape and history. These rivers provide habitats for various wildlife and are popular destinations for activities such as fishing, boating, and hiking. **

The Ireland Islands refer to the numerous small islands that surround the coast of Ireland. These islands are known for their stunning natural beauty, rich history, and unique culture. Many of the islands are inhabited, with residents living traditional lifestyles and relying on fishing and farming for their livelihoods. Visitors to the Ireland Islands can enjoy activities such as hiking, birdwatching, and exploring ancient ruins, and experience the warm hospitality of the island communities. **

England is a country that is part of the United Kingdom, along with Scotland, Wales, and Northern Ireland. The United Kingdom is a sovereign state that includes these four countries. Ireland, on the other hand, is a separate country that is not part of the United Kingdom. Ireland is divided into the Republic of Ireland, which is an independent country, and Northern Ireland, which is part of the United Kingdom. **

Northern Ireland is a part of the United Kingdom, while Ireland is an independent country. Northern Ireland has a predominantly Protestant population, while Ireland is predominantly Catholic. The two countries have different currencies, with Northern Ireland using the British pound and Ireland using the euro. Additionally, Northern Ireland has its own devolved government, while Ireland has a unitary parliamentary republic system. **