Okay, so thraco-roman is something that happened a long time ago in ancient history.
Back then, there were two different cultures called the Thracians and the Romans who lived near each other in a place called the Balkans.
Sometimes, they would fight each other, but at other times, they would trade and interact with each other too.
Because they lived so close to each other and had so much contact, their cultures started to blend together. This mix of their two cultures became known as thraco-roman.
This thraco-roman culture had things from both the Thracians and the Romans, like their clothing, food, and even their language. It was like a big mix of both cultures that became their own unique thing.
So basically, thraco-roman is a combination of the Thracian and Roman cultures, which happened a long time ago in a place called the Balkans.