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.
Nearly one-fourth of the worldâs population today is Muslim. The Muslim population is a diverse community of believers spanning the globe. Over fifty countries have Muslim-majority populations, while other groups of believers are clustered in minority communities on nearly every continent. By Huda.