The diversity immigrant Visa program allows and makes available 55,000 immigrant visa available per year to countries with low immigration rates.
Explanation:
The process is take forward with various steps and procedure. The state of the country is examined and next applicants are selected in which there are very less number of immigrants.
And this evaluation is done taking the data pf previous 5 years. As from the data and information collected from previous year around 23 million people have applied form the lottery.
The perpetual visas are given to individuals applying for green cards and make up around 5 percent of the 11 million U.S. visas gave in 2016. Among the nonimmigrants visas, there are 81 classifications.
