What is one reason the Japanese followed a policy of expansionism before World War 2 was to gain?

One reason the Japanese followed a policy of expansionism before World War II was to gain access to essential Natural Resources. Japan, being resource-poor, sought to secure raw materials like oil, rubber, and iron by expanding its territory in Asia, particularly in regions like Manchuria and Southeast Asia. This expansionist strategy aimed to support Japan's industrial growth and military ambitions, ultimately leading to increased power and influence in the region.