Question

which of the ages immediately predeeded the iron age

Answer 1

The Iron Age is the final epoch of the three-age system, preceded by the Stone Age (Neolithic) and the Bronze Age. It is an archaeological era in the prehistory and protohistory of Europe and the Ancient Near East, and by analogy also used of other parts of the Old World.

Answer 2

Stone Age and Bronze Age preceded Iron Age.  

Bronze and iron age is also known as the metallic ages.

Duration of each age varies depending on the region.

In the iron-age production of the carbon steel was perfected to the point that production of tools and weapons superior to bronze became possible.