By the End of the Nineteenth Century,the Only Thing Keeping

By the end of the nineteenth century,the only thing keeping China from being completely divided up into spheres of influence by foreigners was

A) distrust among the foreign powers.
B) the European respect for Chinese intellectual and cultural superiority.
C) the British stipulation in the Treaty of Nanjing that China remain a unified and sovereign nation.
D) a Franco-British manifesto to support China as a block to further Russian expansion.
E) Japanese support,based on centuries of admiration for Chinese culture.