system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5 why did the Bronze Age happen before the Iron Age?

I would have thought that with bronze being an alloy it would have been more difficult to work with than iron, so why was it the first to become widely used?
gpt
Places started with copper

Copper is soft, workable, and melts into a liquid at temperatures achievable by a wood fire(1100 C)

Iron is hard and does not melt into a liquid in a normal wood fired kiln, it only melts if you get it up to 1500C.  You need a special charcoal fired bloomery to process iron ore so you first need a good source of iron ore *and* charcoal.

Tin, similar to copper, will completely melt so all it takes is for someone to mix the two and discover that bronze is *wayyy* harder than copper making it much better suited for weapons.