It's not salt, but Tsar Alexis I faced a riot over this substance in response to Russia's participation in the Second Northern War. Sumitomo, one of the Big Four zaibatsu of Japan, began by producing this resource. The Slovak city of BanskÃ¡ Bystrica was a center of this resource's production, which Jakob Fugger the Rich took advantage of. Historically, much of Europe's supply of this resource came from the Falun Mine in Sweden. Eduardo Frei (*) 
It's not salt, but Tsar Alexis I faced a riot over this substance in response to Russia's participation in the Second Northern War. Sumitomo, one of the Big Four zaibatsu of Japan, began by producing this resource. The Slovak city of BanskÃ¡ Bystrica was a center of this resource's production, which Jakob Fugger the Rich took advantage of. Historically, much of Europe's supply of this resource came from the Falun Mine in Sweden. Eduardo Frei (*) Montalva began a process of nationalizing the production of this resource, which was completed by his successor Salvador Allende. This resource takes its name from Cyprus, where much of it was mined in antiquity. For 10 points, name this element that makes up much of an Olympic bronze medal
It's not salt, but Tsar Alexis I faced a riot over this substance in response to Russia's participation in the Second Northern War.
copper [or Cu; or cuprum] 