A. Strict Visa policy
B. Common Visa policy
C. American states Red Zone
D. None of these
🧠 Explanation:
The Schengen Area refers to 26 European countries with a common visa policy, allowing free movement. Studying this highlights international cooperation, a key topic in geopolitics. It underscores the impact of open borders on trade and mobility, with implications for understanding European integration and global migration policies.
