>>10020554There is pigmentational evidence for slight demographic replacement in England. Population densities in Europe were much higher in France and core Europe than in Britain and Russia and Scandinavia.
Anyway, my main point was to the way OP worded it--the age of exploration/colonialism/whatever isn't something that saved Whites from extinction. Quite the contrary, it is the very opposite. The way OP worded it is as if the age of colonialism was saving White people from extinction when nothing is further from the truth.
Colonialism allowed Europe to offload much of their population to the Americas, which certainly made those continents White-ruled. But the larger picture is that Europe's population dropped significantly because of this, and remains low today because wealthy englightened people have fewer kids.
In a civilizational collapse scenario, which will happen eventually, all the Whites in the Americas are completely cut off from Eurasia. It would be Europe (800 million) vs. Northeast Asia (1500 million) vs. India (1700 million). Southeast Asia and the Middle East are each an extra 500 million.
This situation increases the chances that Europe falls to some non-White power, and in thousands of years from then, those spawned from the event would eventually rediscover America and rape/kill the descendants of White/black/Hispanic Americans, who would have much lower population densities and undeveloped civilizations.