Visa:A visa is an endorsement or stamp placed in a passport that grants the holder permission to enter, leave, or stay for a specified period of time in a particular country or region.
Border Control: Border control refers to the measures taken by governments to regulate the movement of people, goods, and vehicles across international borders, often involving the inspection of passports and other travel documents.
Freedom of Movement:The right or ability of individuals to move freely within or between countries, without undue restrictions or barriers, as a fundamental human right.