>>17810652 (OP)If by “how” you mean the process of physical acquisition through the ground, then the answer is yes, it’s this novel profession commonly referred to as ‘mining’. The working of the tin to alloy with copper was practiced by people who had a profession known as ‘smithing’. I can use much smaller words if this was too confusing for you.
If by “how” you mean distribution, then you’ll want to learn about the Hittite Empire, an indo-european group that occupied Anatolia (modern day Turkey). The Hittites were the leading producers of bronze since their territory had ready access to both tin and copper and their militarism created constant demand for war technologies that utilized bronze.
>>17810656This is partially true. The Phoenicians were responsible for the mass distribution of bronze across the Mediterranean but only because they had contact with Hittites who could supply them bronze to begin with.