How does a visa work in Canada for international travelers?

A visa is a document that allows international travelers to enter and stay in Canada for a specific period of time. Travelers must apply for a visa before their trip and meet certain requirements, such as having a valid passport and proof of funds. Once approved, the visa will be stamped in the traveler's passport and they can enter Canada for the specified duration. It is important to follow the visa conditions and leave Canada before the visa expires to avoid any legal issues.