The Green Card Lottery was created by the United States government and the Green Card Lottery have the the aim of diversifying the population of America and this is accomplished by granting 50,000 green cards each year to all countries that don't normally send many immigrants to the United States for Green card lottery including Nepal, Fiji, Haiti and Netherlands.
The Green card holder is someone who has been granted authorization to live and work in the United States on a permanent basis. The Green Card Lottery is a way to still come to America, even if you don't fall into one of those categories.