Sultan Murad IV was the 17th Sultan of the Ottoman Empire, reigning from 1623 to 1640. He became known for his strong leadership and efforts to restore order in a time of political instability. Murad IV was a military leader who expanded the empire's territories and fought against the Persian Empire and Mamluks. He is also remembered for his strict enforcement of laws and his attempts to curb corruption. Murad IV famously banned alcohol and tobacco, believing these substances weakened his subjects. His reign is often noted for its significant cultural and architectural contributions, including the restoration of Istanbul.