Okay, kiddo! Let's talk about the prehistory of southeastern Europe.
A long time ago—like, way before grandparents are born—people were living in what we now call southeastern Europe. They didn't have cities or countries like we do today. They lived in small groups that moved across the land to find food and shelter.
Some of these people were called the Neolithic farmers. They were some of the first folks to bring farming to southeastern Europe. That means they learned how to grow their own food, like wheat and barley, instead of just hunting and gathering. They also learned how to keep animals, like goats and sheep, for meat and milk.
A little later on in time, folks in southeastern Europe learned how to work with metal. They made things like tools and weapons out of copper and later, bronze. People started trading goods with each other, like salt and precious metals.
There were also groups of people who were warriors. They were called the Illyrians and the Thracians. They didn't have any writing, but we know about them from what other people wrote about them a long time ago. They were skilled fighters and fierce in battle.
As time went on, people in southeastern Europe started to develop their own cultures and traditions. There were lots of different groups of people, speaking different languages and worshiping different gods. But they all left their mark on the land and on the people who came after them. And that's the prehistory of southeastern Europe, in a nutshell!