Are you planning to study in the United States? Or enjoying a vacation in Europe? When traveling to a foreign country, a visitor usually needs to apply for a visa. There are various visas, and the correct visa category will depend on the purpose of your visit.
Each country has its own immigration laws, so you will find different requirements to travel for each country. However, the types of visa and application processes are very similar. Your visa category will depend on your travel purpose and the options available for your nationality.