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.
Quick Answer. Islam, the Muslim religion, originated in the Arabian Peninsula around 622. Islam's prophet, Muhammad, lived in Mecca, a city in the western part of the peninsula. Here he developed the core doctrines of the religion.