Niger is a secular country and separation of state and religion is guaranteed by Articles 3 and 175 of the 2010 Constitution, which dictate that future amendments or revisions may not modify the secular nature of the republic of Niger. Religious freedom is protected by Article 30 of the same constitution. Islam, widespread in the region since the 10th century, has greatly shaped the culture and mores of the people of Niger. Islam is the most dominant religion, practiced by 99.3% of the population according to the 2012 census.