Why were the Celts called the iron age Celts?

The Celts were referred to as the Iron Age Celts because they thrived during the Iron Age, a period characterized by the widespread use of iron for tools and weapons, which began around 800 BCE in Europe. This technological advancement allowed them to develop more efficient agricultural practices, enhance their warfare capabilities, and create intricate metalwork. The Iron Age Celtic culture is marked by distinctive art styles, social structures, and trade networks that spread across Europe, particularly in regions such as Gaul, Britain, and Ireland.