Answer:
The Iberian and Celtic culture groups emerged in different regions of Europe at different times.
The Iberians are believed to have originated from indigenous groups that inhabited the Iberian Peninsula, which is present-day Spain and Portugal. They developed a distinctive culture and language around the 6th century BCE, which was heavily influenced by the Phoenicians, Greeks, and Carthaginians. The Iberians contributed to their society through their expertise in metalworking, agriculture, and their complex social structures. They also played a significant role in trade and commerce.
The Celts, on the other hand, originated from the area that is now known as central Europe, and began to spread across much of Western Europe around the 5th century BCE. They were skilled warriors and farmers, and their society was organized around clans and tribal structures. The Celts contributed to their society through their advancements in metallurgy, art, and religion. They also had a significant influence on the development of the Roman Empire.
Both the Iberian and Celtic cultures had a lasting impact on the societies that succeeded them. For example, many place names and words in modern-day Spanish and Portuguese have their roots in the Iberian language. Similarly, the Celtic culture had a significant influence on the art, music, and folklore of many European countries.
The decline of these cultures was brought about by various factors such as military conquest, political and social instability, and economic decline. The Roman Empire conquered the Iberian Peninsula in the 3rd century BCE, which led to the decline of the Iberian culture. Similarly, the Celtic culture began to decline with the Roman conquest of much of Europe, and their eventual assimilation into other cultures.