The term visa is applied to describe the granting of a certificate or documentation with which the individual is identified as able to enter a certain nation, this instrument is then known as "visa". In this way, the visa is a regulation applied in very crowded countries or those nations considered as "world power", it is mainly applied to legalize the stay of tourists or people who are not natives of said nation and in this way they can transit from Legally, this document is attached to the passport so that the authorities that allow entry to the country can confirm that said person has been evaluated to enter and leave the country as many times as they wish.
According to what you want to do in the destination country , different visas can be granted, such as: transit visa, this is the document that allows the individual to make a stopover on their trip to a country other than their destination, the maximum stay in the countries of passage is three days; The tourist visa which is the permission that is granted to the visitors of a country to know its surroundings, this type of visa does not allow or approve the performance of remunerated activities or the establishment of businesses within the nation, basically it only gives permission to walk around the country and its maximum duration is six months. On the other hand, there is the work visa and the student visa, which do allow you to stay longer within the nation, where paid activities and registration to any study house are approved respectively.
