A. Winning the green card lottery is one way to get approval for permanent residency in the United States. The lottery is held online every year through the official website of the US Department of State. Though entry to this lottery is free, participants must belong to a country which appears in the list of places which have eligibility to participate in the same. Apart from this, the participants also must possess at least a high school diploma or two years of working experience.

For more details in this regard, you should check out the official website of the US Department of State.