[sedachv]

> It's also difficult to acquire citizenship without several years of residence.

You need a spend a certain amount of time living in Canada as a permanent resident (3 years, non-contiguous, although this figure may be out of date) to be eligible for citizenship, but if you have permanent residency you have almost the same rights as a citizen. It's getting the permanent resident status that's hard. There is no requirement to live in Canada under another visa to obtain permanent residency - you can apply for and obtain permanent residency status from your home country before arriving in Canada. That's how the majority of non-family sponsored people immigrate to Canada.