Answer: The shrinking resources of Germany and Japan, combined with the mass production of war materials in the US.
Explanation:
Answer:
Tobacco was the significant factor of Virginia's growth and slaves were needed to labor the tobacco crops
Research by some scholars provides population estimates of the pre-contact Americas to be as high as 112 million in 1492, while others estimate the population to have been as low as eight million. In any case, the native population declined to less than six million by 1650.
I believe there is a book on the matter as well. Good luck. :)
