Why did Germany choose to leave the League of Nations?

Germany chose to leave the League of Nations primarily because it desired to impose its own terms on disarmament. After World War I, the Treaty of Versailles imposed strict disarmament terms on Germany, leading to significant resentment within the nation. Many Germans felt that these disarmament conditions were unjust and humiliating. Within the League, Germany aimed to advocate for a re-evaluation of its disarmament obligations, seeking a more favorable stance that would allow it to rebuild its military strength. The discontent regarding the League's handling of disarmament issues contributed to Germany's decision to exit, as the government believed that it could not effectively pursue its national interests while bound by terms it considered inequitable.

The other choices don't fully capture the motivations behind Germany's departure. For instance, while economic sanctions were indeed a concern, they were not the primary reason for leaving the League. Additionally, the assertion that Germany had achieved its goals within the League overlooks the ongoing dissatisfaction with its status and the Treaty of Versailles as a whole. Expanding military alliances, while possibly a future goal, was not the motivating factor for Germany’s immediate action to withdraw from the League of Nations.