The Celtiberian Wars were a series of battles that happened a very long time ago in a place called Spain. The battles were between two groups of people: the Celts, who were from a place called Celtica, and the Iberians, who were from Spain.
The Celts and Iberians had different ways of living and speaking, and they didn't always get along. Sometimes they fought over things like land and resources.
The Celts were very good at fighting, and they had a lot of powerful weapons like swords and spears. The Iberians were also very good at fighting, but they used different kinds of weapons like slingshots and bows and arrows.
The wars lasted for many years, and both sides won some battles and lost others. It was a very hard and dangerous time for the people who lived there.
In the end, the Iberians managed to win the wars and they became the dominant group in Spain. But even though the Celts lost, their influence can still be seen in some parts of Spain today, like in the Celtic music and art that people still enjoy.