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.
But Menelik, after the stupendous victory at Adwa, could not use the same structure to pursue the Italians into Eritrea and throw them entirely into the Red Sea. The result was that, although Ethiopia was, as an Empire, saved by the Battle of Adwa, the Italians remained lodged on the periphery.he Rist-Gult system was used not only at Magd la, but also against Egypt at Gundet (1875), Gura (1876), Italy at Dogali (1887), and against the Mahdist Sudan at Metemma (1889). [It was in this battle, at Metemma, that Emperor Yohannes IV had died.] The Battle of Adwa was based mostly on the Geber Madriya system.