This study goes beyond the physical understanding to show how the egoism of the Allied powers damaged the economic and socio-political settings in Cameroon. For better understanding, other research works have been visited and the findings showed that, after the First World War, their Cultures were never the same as it was during the German administration. Also, Cameroon lost territories to almost all of its neighboring Countries in 1919. The Allied powers partitioned Cameroon for their selfish ambitions. In 1922, it was a mandate of the League of Nations to be administered by Britain and France but the League failed to answer the request of Cameroonians to restore their stolen territories. And in 1949, it was a United Nations Trust Territory. All these transformations affected the cultural, Economic, and Socio-Political settings in Cameroon, for example, the country became bilingual, with two different Languages, British Cameroon suffered from administrative neglect and intimidation by Nigerians, and more to that, in 1961 they lost another territory to Nigeria. The level of disagreement that emanated in Cameroon made Nation building a difficult goal to achieve.