The only answer that explains the facts is that the prophets of the two great centuries worked out a particular interpretation of the course of history, and induced their people to accept it, at least in sufficient numbers to give a new direction to their history for the future. (religion-online.org)
In the so - called «great century» of the expansion of Christianity, the 19th century, and continuing through the first half of the 20th, foreign missions became so central in the outreach of evangelical Christianity that the term «missions» was generally understood to mean foreign missions. (religion-online.org)
From the standpoint of that influence the hundred years between 1815 and 1914 were the great century. (religion-online.org)