Europe has removed most restrictions on movement between countries primarily due to the Schengen Area, allowing passport-free travel across many nations. In contrast, other regions like Asia, North America, and the Middle East maintain various restrictions on travel. Thus, the best answer is Europe. ;
Europe has removed most restrictions on movement between countries, primarily due to the Schengen Area, which allows passport-free travel across many nations. Other regions like Asia, North America, and the Middle East maintain various travel restrictions due to different political and economic factors. Thus, the best answer is Europe.
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