Because pure iron, with no carbonization, is useless as a material for tools or weapons.
Carbonization was invented/discovered after the Bronze Age collapse, slowly over hundreds of years, exactly because they didn’t have access to bronze anymore.
Carbonization was invented/discovered after the Bronze Age collapse, slowly over hundreds of years, exactly because they didn’t have access to bronze anymore.
Also you are talking about Iron Age. Which came after and as a consequence of the Bronze Age.
Pure iron is utterly useless as a weapon. Look it up.
Iron was already known to civilization during Bronze Age, but they didn’t know how to make it hard. Hence Bronze was preferred.
After, and because, of the Bronze Age collapse they started funding out how to make iron useful.
Think about it, why did the humans in Americas never went through Iron Age? Because they never had a Bronze Age collapse.