Setting the scene
The Ottoman Empire collapsed after World War I; Mustafa Kemal Atatürk led nationalist forces against Greek occupation and Sultanate authority, winning the War of Independence and abolishing the caliphate in favor of secular nationhood.
What happened
The Republic of Turkey was proclaimed on October 29, 1923, replacing the sultanate with a Grand National Assembly presidency and moving the capital from occupied Istanbul to Ankara.
Why it still matters
Latin script and secular reforms followed through hat laws, women's suffrage, and state-controlled religion; Atatürk's portrait still anchors Turkish identity debates between NATO membership, EU candidacy, and Erdogan-era re-Islamization.
Background
Latin script and secular reforms followed.