The dominant religion in Iran is Islam, specifically the Twelver branch of Shia Islam, which is the state religion. Approximately 90-95% of the Iranian population identifies as Shia Muslim, with the remaining practicing other faiths, such as Sunni Islam, Christianity, Judaism, and Zoroastrianism. The Islamic Republic of Iran was established after the 1979 revolution, which emphasized Islamic governance. Religious laws and principles play a crucial role in the nation's legal system and cultural norms. The Iranian government actively promotes Shia Islamic teachings, and religious observances significantly influence daily life and national policies.