You can start with this website http://nigeria.usembassy.gov/ A letter of invitation is usually advised. They may also need to show strong ties to their country, such as family, a job, home, a bank account.
Quick Answer. Over one billion Muslims live in Asia, which makes it the continent with the highest Muslim population. Indonesia is the country with the largest Muslim population, with 209 million people. Continue Reading.
1Germany and France have the largest Muslim populations among European Union member countries. As of 2010, there were 4.8 million Muslims in Germany (5.8% of the countryâs population) and 4.7 million Muslims in France (7.5%). In Europe overall, however, Russiaâs population of 14 million Muslims (10%) is the largest on the continent. 2The Muslim share of Europeâs total population has been increasing steadily.