What were Du Bois’ two goals for the “Crisis”?

Du Bois organized a series of Pan-African congresses around the world, in 1919, 1921, 1923, and 1927. The delegations comprised intellectuals from Africa, the West Indies, and the United States. Though resolutions condemning colonialism and calling for alleviation of the oppression of Africans were passed, little concrete action was taken. The Fifth Congress (1945, Manchester, England) elected Du Bois as chairman, but the power was clearly in the hands of younger activists, such as George Padmore and Kwame Nkrumah, who later became significant in the independence movements of their respective countries. Du Bois’s final Pan-African gesture was to take up citizenship in Ghana in 1961 at the request of President Kwame Nkrumah and to begin work as director of the Encyclopedia Africana.

the answer wold be b) travel among nations should be regulated by an international organization

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).