Wow! What a difference a century makes! In 1910, most of the the world's Christians lived in Latin America and Europe, as you can see in the Pew Research graph above. Not in 2010. Almost half of the world's Christians now live in Latin America and Sub-Saharan Africa!
You can see the changes in the numbers for the Global North and the Global South. In 1910, the Global North had about 5 times more Christians than the Global South. That changed by 2010. The Global South now outnumbers the Global North by almost 50 million!
That's not big news. Writers have been talking about the rise of the Global South for years. In 2011, Philip Jenkins released a book about the phenomenon called" The Next Christendom: The Coming of Global Christianity."