How important was tin towards the formation of long distance trade routes. I have heard it relative scarcity to bronze age societies created a demand that allowed for the formation of many trade routes.
How are there no green dots on Sardinia if it had the biggest amount of copper mines in the Med next to Cyprus?
Either way most swords in Scandinavia were made of mainly Sardinian copper during the bronze Age according to a recent study, but I don't know about tin.
Copper is quite widespread but tin is not. It's especially rare in the near east, which coincidentally is the birthplace of civilizations. Acquiring reliable supplies of tin was a major preoccupation of ancient rulers
Greeks as early as the bronze age traded with Albion and Ireland for tin. Some people think mycenaeans actually colonized the west med. For that purpose.
Im having a hard time finding the paper again though.