The Spread of the Gospel Map

This animated map is a powerful visual depiction of the most important movement in history: the spread of Christianity. Every frame is one year in the last 2000 years of the Great Commission. It does not show only nations that have declared Christianity to be the national religion, or even areas where professing Christians are the majority of the population.  It shows everywhere the Gospel has been preached, where churches and Christian gravestones first show external evidence of that work, and where churches and Bibles are accessible today.
For contrast and context the map shows also how Islam, Roman Empire, Byzatine Empire, Mongol Empire and Communism spread and decreased.