Had the Brits not migrated to America, would we have had such a massive population as America?
I understand that not all Americans are from England, but those who are are estimated to be around 70 million. Would that mean the population of Britain would have risen to 130-140 million? I understand that population density and scarcity of resources puts a limit on population growth, but how much would the population have increased if the Brits never migrated to America do you reckon?