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.
Today there are nearly 65 states or countries with significant or majority populations who are Muslim. They include some of the largest nations in the world in terms of population, such as Indonesia, Nigeria, and Pakistan. Others are small countries like Qatar and Djibouti.