What is the most important reason that christianity is so geographically widespread? a. the emigration of christians to non-christian areas around the world b. the conquest of non-christian areas by christian colonial powers c. trade between christian nations and nations of other faiths d. the increased availability of new technology and forms of communication

Christianity was spread around the world through a number of different methods including missionaries, person to person through trading routes, and also through military conquest. It is fair to say however, that overall the conquest of non-Christian areas by Christian colonial powers (B) was the major force that led to the widespread diffusion of Christianity around the globe. 

Under President Woodrow Wilson, the United States adopted a policy of non-intervention, avoiding conflict interference and seeking to bring about a European peace that was "in thought and in deed" described as neutrality.

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