Daily History Challenge · No. 11 · Thursday 9 July 2026 · Chain

Puzzle No. 11: Chain

The anchor was Shah Ismail I proclaims Twelver Shi'ism the state religion of Iran (1501 CE). Every challenger is listed below with its year.

The anchor

1501Shah Ismail I proclaims Twelver Shi'ism the state religion of Iran

After capturing Tabriz in 1501, the teenage Safavid leader Ismail I took the title Shah and declared Twelver Shia Islam the official and compulsory faith of his new Iranian state. Backed by the militant Qizilbash Turkmen tribes who venerated him as a near-divine figure, Ismail imposed Shi'ism by force, suppressing Sunni institutions and importing Shia clerics to instruct a largely Sunni population. The decision is one of the great turning points in Islamic history: it forged a durable Shia identity for Iran that distinguished it sharply from the Sunni Ottoman and Uzbek powers on its borders, fuelling centuries of Ottoman-Safavid rivalry. It also fused religious authority with the monarchy, giving the Safavid dynasty a powerful ideological foundation. The religious frontier established in 1501 endures to the present, making modern Iran the demographic and spiritual heartland of Shia Islam and shaping the sectarian geography of the wider Middle East.

Read the full story · See the world in 1501 CE