Safavid conversion of Iran to Shia Islam in the context of "History of Shia Islam"

Zoroastrianism, an Iranian religion, has been present in India for thousands of years. Though it split into a separate branch, it shares a common origin with Hinduism and other Indian religions, having been derived from the Indo-Iranian religion. Though it was once the majority and official religion of the Iranian nation, Zoroastrianism eventually shifted to the Indian subcontinent in light of the Muslim conquest of Iran, which saw the Rashidun Caliphate annex the Sasanian Empire by 651 CE. Owing to the persecution of Zoroastrians in the post-Sasanian period, a large wave of Iranian migrants fled to India, where they became known as the Parsi people, who now represent India's oldest Zoroastrian community. Later waves of Zoroastrian immigration to India took place over the following centuries, with a spike in the number of these refugees occurring during the Safavid conversion of Iran to Shia Islam and again during the reign of the Qajar dynasty, whose persecution of Zoroastrians prompted many to flee to British India, where they became known as the Irani people. Though Zoroastrian, the Parsis and the Iranis are culturally, linguistically, and socially distinct from each other due to their inception in separate periods of migration.

The comparatively liberal atmosphere of India and the protection provided by historical Indian kingdoms to their Zoroastrian subjects enabled the religion to flourish outside of the Iranian plateau. Today, India is home to the largest Zoroastrian population in the world, and despite their overall low population number, Indian Zoroastrians have had a significant impact on India's economy, culture, politics and military, and also played a major role in the Indian independence movement.

The Guarded Domains of Iran, commonly called Safavid Iran, Safavid Persia or the Safavid Empire, was one of the largest and longest-lasting Iranian empires. It was ruled from 1501 to 1736 by the Safavid dynasty. It is often considered the beginning of modern Iranian history, as well as one of the gunpowder empires. The Safavid Shāh Ismā'īl I established the Twelver denomination of Shīʿa Islam as the official religion of the empire, marking one of the most important turning points in the history of Islam.

A dynasty rooted in the Sufi Safavid order founded by sheikhs of native Iranian (possibly Kurdish) origin, it was not only Persian-speaking, but also Turkic-speaking and Turkified. From their base in Ardabil, the Safavids established control over parts of Greater Iran and reasserted the Iranian identity of the region, thus becoming the first native dynasty since the Buyids to establish a national state officially known as Iran.

The Arab conquest of Iran, which culminated in the fall of the Sasanian Empire to the nascent Rashidun Caliphate, brought about a monumental change in Iranian society by purging Zoroastrianism, which had been Iran’s official and majority religion since the time of the Achaemenid Empire. Since the Rashidun invasion, Islam (in any form) has consistently held the status of Iran's official religion except for a short period in the 13th century, when the Mongol invasions and conquests destroyed the Abbasid Caliphate and smaller Islamic realms before resulting in the establishment of the Ilkhanate. The process by which Iranian society became integrated into the Muslim world took place over many centuries, with nobility and city-dwellers being among the first to convert, in spite of notable periods of resistance, while the peasantry and the dehqans (land-owning magnates) took longer to do so. Around the 10th century, most Persians had become Muslims.

Between the 7th century and the 15th century, Sunni Islam was the dominant sect in Iran, and Iranian academics of this period contributed greatly to the Islamic Golden Age. In the 16th century, the newly enthroned Safavid dynasty initiated a massive campaign to install Shia Islam as Iran's official sect, aggressively proselytizing the faith and forcibly converting the Iranian populace. The Safavids' actions triggered tensions with the neighbouring Sunni-majority Ottoman Empire, in part due to the flight of non-Shia refugees from Iran. It is estimated that by the mid-17th century, Iran had become a Shia-majority nation. Over the following centuries, with the state-fostered rise of an Iran-based Shia clergy, a synthesis was formed between Iranian culture and Shia Islam that marked each indelibly with the tincture of the other. Later, under the Pahlavi dynasty, Islamic influence on Iranian society was rolled back in order to assert a new Iranian national identity—one that focused on pre-Islamic Iran by shedding more light on Zoroastrian tradition and other aspects of ancient Iranian society, particularly during the Achaemenid era. However, in 1979, the Islamic Revolution brought about yet another monumental change by ending the historic Iranian monarchy and replacing it with an Islamic republic.

The Safavid dynasty (/ˈsæfəvɪd, ˈsɑː-/; Persian: دودمان صفوی, romanized: Dudmân-e Safavi, pronounced [d̪uːd̪ˈmɒːne sæfæˈviː]) was the ruling dynasty of Safavid Iran, and one of Iran's most significant ruling dynasties reigning from 1501 to 1736. Their rule is often considered the beginning of modern Iranian history, as well as one of the gunpowder empires. The Safavid Shah Ismail I established the Twelver denomination of Shi'a Islam as the official religion of the Persian Empire, marking one of the most important turning points in the history of Islam. The Safavid dynasty had its origin in the Safavid Sufi order, which was established in the city of Ardabil in the Iranian Azerbaijan region. It was an Iranian dynasty of Kurdish origin, but during their rule they intermarried with Turkoman, Georgian, Circassian, and Pontic Greek dignitaries; nevertheless, for practical purposes, they were not only Persian-speaking, but also Turkish-speaking and Turkified. From their base in Ardabil, the Safavids established control over parts of Greater Iran and reasserted the Iranian identity of the region, thus becoming the first native dynasty since the Sasanian Empire to establish a national state officially known as Iran.

The Safavids ruled from 1501 to 1722 (experiencing a brief restoration from 1729 to 1736 and 1750 to 1773) and, at their height, controlled all of what is now Iran, Azerbaijan, Bahrain, Armenia, eastern Georgia, parts of the North Caucasus including Russia, Iraq, Kuwait, and Afghanistan, as well as parts of Turkey, Syria, Pakistan, Turkmenistan, and Uzbekistan.

The Guarded Domains of Iran, commonly called Safavid Iran, Safavid Persia or the Safavid Empire, was one of the largest and longest-lasting Iranian empires. It was ruled by the Safavid dynasty from 1501 to 1736. It is often considered the beginning of modern Iranian history, as well as one of the gunpowder empires.

The Safavid emperor Ismail I established Twelver Shi'ism as the official religion of the empire, marking one of the most important turning points in the history of Islam.