How do Visas Work?

Almost every country requires citizens of at least some certain countries to get something called a travel visa before they can set foot in the country. So, what exactly is a visa, and how do they work?
Get the visa you may need for your next international trip, and support future KhAnubis videos, by doing so with iVisa! (This is an affiliate link)
www.ivisa.com/...
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"Village Consort" by Kevin Macleod
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