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 share of the worldâs Muslims who live in sub-Saharan Africa will increase from 15.5% in 2010 to 24.3%. Asia, which is currently home to more of the worldâs Muslims (61.7%) than all the other regions combined, will continue to host a majority of the worldâs Muslims, albeit with a smaller share (52.8%).