Why The League of Nations imposed economic embargo on Italy but not on Japan?

The League of Nations imposed an economic embargo on Italy in response to its invasion of Ethiopia in 1935, as it aimed to uphold collective security and discourage aggression in Europe. In contrast, Japan's actions in China, particularly the invasion of Manchuria, were met with less stringent measures due to the geopolitical complexities of the time, including Japan's status as a major power and the League's reliance on member states for enforcement. Additionally, the League's effectiveness was undermined by the reluctance of key members to fully commit to sanctions against Japan, reflecting the limitations of its authority.