The definition of symbiosis has varied among scientists. Some advocated that the term symbiosis should only refer to persistent mutualisms, while others thought it should apply to any type of persistent biological interaction (in other words mutualistic, commensalistic, or parasitic).
The League of Nations failed for a couple of reasons: 1  The United States was not part of it. 2  More importantly, the countries in the League did not take the idea of collective security seriously.3  When countries attacked others, nothing was done. 4  For example, Italy attacked Ethiopia and Japan attacked China. The United States was not part of it. 2  More importantly, the countries in the League did not take the idea of collective security seriously. 3  When countries attacked others, nothing was done. 4  For example, Italy attacked Ethiopia and Japan attacked China. 5  In both cases, nothing serious was done.
The League in Abyssinia. In the 1930s,the League failed terribly. This page looks at its failure in Abyssinia. By 1935, most countries did not think that the League could keep the peace. When Hitler began to break the Treaty of Versailles in the 1930s, the League was powerless to stop him.The League failed, and the only way to stop Hitler was a Second World War.y 1935, most countries did not think that the League could keep the peace. When Hitler began to break the Treaty of Versailles in the 1930s, the League was powerless to stop him.