Ok explain this.
When Europeans first arrived in North America, they brought with them germs that didn't kill the Spanish, but killed up to 95% of North Americans. In South America, people who gave up their religion, and converted to Christianity died at a faster rate than those who kept their own religion.
There were no diseases of equal magnitude that wiped out the Europeans.
Now there are very straight forward explanations for this, from an evolutionary perspective, and based on the evidence that humans and our descendents are millions of years old.
What is your biblical explanation?