When did Columbus Day turn into Italian-American heritage day?

[alphaboi867]

@aldiboronti

Even if the Europeans hadn’t colonised the Americas the likelihood is that things would be much the same, ie there would be a 21st century industrial society on the continent, whether Native American or otherwise. Same old pollution.

My guess would be Chinese (they came very close IRL, but a new emperor decided his fleet was a waste of money and had it burned).