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.
A variety of excuses were presented for the Leagueâs failure in Manchuria including: 1) Japan was too far away. 2) Japan was a leading member of the League, and so had to be dealt with carefully. 3) China really was in a state of anarchy so maybe it was a good thing that the Japanese had invaded after all. variety of excuses were presented for the Leagueâs failure in Manchuria including: 1) Japan was too far away. 2) Japan was a leading member of the League, and so had to be dealt with carefully. 3) China really was in a state of anarchy so maybe it was a good thing that the Japanese had invaded after all.