Islam in Liberia is practiced by an estimated 12.2% of the population. The vast majority of Liberian Muslims are Malikite Sunni, with sizeable Shia and Ahmadiyya minorities. The primary Muslim ethnic groups are the Vai and Mandingo but also Gbandi, Kpelle and other ethnic groups. Historically, Liberian Muslims have followed a relaxed and liberal form of Islam that is heavily influenced by indigenous religions that were integrated into Islam when it came to Liberia in the 16th century with the collapse of the Songhai Empire in Mali. Islamic religious practices vary in cities and towns across the country. Younger Liberian Muslims, particularly in the cities along the coast, tend to be more secular but still practice Islam in everyday life. In rural areas, Liberian Muslims are more conservative in dressing modestly, performing prayers and attending religious studies. The practice of Islam in Liberia has been compared to Islam common in Senegal and Gambia, with strong orientation toward Sufism. The major Islamic holidays, Eid el Fitr, Ramadan and Eid al Adha, called Tabaski Day, are celebrated annually in Liberia. People have begun to go on Hajj to Mecca in recent years. Joint English-Arabic language, Quranic, and Muslim universities and Islamic studies schools have opened and been rebuilt in the capital Monrovia, rural towns and other cities. Islam appears to be experiencing revival alongside Christianity in the country as a result of the Liberian Civil War. America-Liberian Methodists, the first Christians in Liberia, arrived on January 7, 1822.