Who was the most important ruler of Saudi's second reign?

The most important ruler of Saudi Arabia's second reign was King Abdulaziz Al Saud, also known as Ibn Saud. He unified the various tribes and regions of the Arabian Peninsula into the Kingdom of Saudi Arabia in 1932, establishing a modern state. His reign set the foundation for the country's governance, development, and economic growth, particularly through the discovery of oil in the late 1930s. Abdulaziz's leadership and vision were pivotal in shaping the nation’s identity and its role in the Middle East.