There are several threads about successful Vinland, but what about something less spectacular-Azores and Madeira settled by Norse?
Vikings were around, raiding Iberia, also mouse bones from 10/11th century found in Madeira suggests, that Portuguese were not first people there and Norsemen likely preeceeded them, bringing said mouse to the island.
So what need to happen to make Norse presence in Macaronesia more permanent and what would be effects? Madeira and Azores are much warmer than Scandinavia, but still temperate enough for most of their crops, and not bad for sheep either, these islands should be far more hospitable for Norse settlers than Iceland or Faroe Islands and there is plenty of wood there for ship building.
Vikings were around, raiding Iberia, also mouse bones from 10/11th century found in Madeira suggests, that Portuguese were not first people there and Norsemen likely preeceeded them, bringing said mouse to the island.
So what need to happen to make Norse presence in Macaronesia more permanent and what would be effects? Madeira and Azores are much warmer than Scandinavia, but still temperate enough for most of their crops, and not bad for sheep either, these islands should be far more hospitable for Norse settlers than Iceland or Faroe Islands and there is plenty of wood there for ship building.