Final answer:
A country is least likely to use physical barriers to limit the movement of people into its borders. Instead, measures such as immigration quotas, passports and visas, and sanctions and embargoes are more commonly used.
Step-by-step explanation:
A country is least likely to use physical barriers to limit the movement of people into its borders.
Physical barriers such as walls or fences are expensive to build and maintain, and they can be seen as hostile or unfriendly gestures towards neighboring countries. Additionally, physical barriers can disrupt trade and other forms of economic cooperation between countries.
Instead, countries are more likely to use measures such as immigration quotas, passports and visas, and sanctions and embargoes to regulate the movement of people across their borders.
Learn more about movement of people across borders