What if all continents had been in regular communication since ancient times?

[pinguin]

@Blake

As for the Americas, it’s hard to see how that works out.

Your idea that disease would have less impact makes little sense. From Columbus’ voyages alone it seems the population of the Americas was halved by disease. The Greeks would have had the same impact. Smallpox, influenza, diptheria and measles were all fully developed pandemics by the bronze age. The only disease the Americans might have been spares is Black Plague. That would probably have spread from the Himalayas at about the same time in both timelines, so devastating both New and Old World to the same degree…

It is hard to believe educated people gives so much credit to the idiotic theory of the diseases, invented by Europeans and Americans to hide the genocide that happened in the Americas.

Yes, blame germs, not the European invaders!