The League of Nations failed for several reasons: it lacked important member countries like the US; member countries prioritized their own interests over the League's; and it had no armed forces so could not enforce its decisions, allowing major aggressors like Japan and Italy to invade other nations without consequence. This undermined the League's power and credibility.

1. League of Nations
Why it failed?

2. Reasons why LON
failed
• Not all major countries joined The United States never
became a member. The League was flawed from the start -
without every powerful nation being a member it would lack
importance.
• Members preferred to look after their own interests Britain
and France were often unwilling to get involved in League
affairs, preferring to make sure their national interest was
defended.
• It had no armed forces With member states unwilling to
provide soldiers, the LON never had an army - its only
weapon was sanctions.
• It was unable to stop aggression by major powers Japan,

3. Reasons why LON
failed
• It had no armed forces With member states unwilling to
provide soldiers, the LON never had an army - its only
weapon was sanctions.
• It was unable to stop aggression by major powers Japan,
then Italy were able to get away with invasions of other
countries. This made the League appear powerless. This
meant Germany could consider breaking the Treaty of
Versailles.