Okay, so imagine you're playing a game of pretend where you're a character living in a big group of people, like a family or a village. Now, let's say that some of the people in your group were born in a place called Tunisia, which is a country in Africa, but they moved to a different place called Europe, which is a big group of countries kind of far away from Africa.
These people are called European Tunisians because they are Tunisian, but they also live in Europe. They might have a mix of Tunisian and European customs or traditions, like speaking both Tunisian and a European language like French or Italian. They might also eat different foods or celebrate holidays differently than other people in their family or village, because they have been influenced by both Tunisian and European cultures.
Just like in your pretend game, people can come from different places and have different backgrounds, but they can all still work together and be part of the same group. That's what it means to be a European Tunisian!