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 first Muslims came to France centuries ago - but the greatest number of Muslims came to France in the contemporary era, in the wake of the colonial wars of independence (1954 - 1962). The major Muslim population centres in France are Paris, Marseille, and Lyon and their outlying suburbs (banlieues). Of the approximately 15 million Muslims who currently live in the European Union, France is home to the largest number, equal to around one third of the total.