A. 21 January 2018
B. 31 January 2020
C. 31 January 2022
D. None of these
🧠 Explanation:
The United Kingdom left the European Union on January 31, 2020, marking Brexit’s formal exit after a 2016 referendum. This ended decades of EU membership, reshaping UK trade, immigration, and politics. Brexit sparked global debates on sovereignty, economic integration, and regional alliances. Studying this event provides insights into European geopolitics, the challenges of disentangling economic systems, and the impact of public referendums on policy, a critical topic in international relations and modern political history.
