maybe this is not history but i need help When Columbus arrived in 1492, the population of Mesoamerica exceeded 25 million. Within a century after his arrival the Native population declined

until it was less than half what it had been before the arrival of Europeans.

by 90 percent.

until the influx of African slaves and Europeans replaced the native population by 1650.

before it began to grow again after Europeans introduced improved medical practices.

Question

maybe this is not history but i need help When Columbus arrived in 1492, the population of Mesoamerica exceeded 25 million. Within a century after his arrival the Native population declined 

 until it was less than half what it had been before the arrival of Europeans. 

 by 90 percent. 

 until the influx of African slaves and Europeans replaced the native population by 1650. 

 before it began to grow again after Europeans introduced improved medical practices.