How far north did potatoes, and to a lesser extent corn, spread before the European colonization of the Americas? I was wondering if the Vikings ever got far enough south to cross paths. IIRC potatoes were mainly introduced to Europe in the 16th century from South America which suggests not.I don't think it'd make much of a difference in the great scheme of things. Turkeys are iconically American, but unlike corn and potatoes, they have no unfilled niche in the Europeran agriocultural system or are in any way superior to local resources. They are likely integrated into European poultry farming, maybe with a specific Norse name, maybe subsumed under 'bustard'.
How far north did potatoes, and to a lesser extent corn, spread before the European colonization of the Americas? I was wondering if the Vikings ever got far enough south to cross paths. IIRC potatoes were mainly introduced to Europe in the 16th century from South America which suggests not.