British-Irish relations refer to the political, economic, and cultural interactions between Britain and Ireland. These relations have a complex history, marked by periods of conflict and cooperation. Key events include the Anglo-Irish Treaty of 1921, which led to the establishment of the Irish Free State, and the Good Friday Agreement of 1998, which helped to address issues related to Northern Ireland and promote peace. Today, British-Irish relations continue to evolve, influenced by factors such as Brexit and ongoing discussions about trade and security. Both nations work together on various issues, including climate change, terrorism, and cultural exchanges, fostering a collaborative relationship despite historical tensions.