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.
The number of Muslims in Europe has grown from 29.6 million in 1990 to 44.1 million in 2010. Europeâs Muslim population is projected to exceed 58 million by 2030. Muslims today account for about 6% of Europeâs total population, up from 4.1% in 1990. By 2030, Muslims are expected to make up 8% of Europeâs population.