Okay, so there are people called Croats who live in a country called Bosnia and Herzegovina. Bosnia and Herzegovina is a country in Europe, kind of near Italy.
Croats are a group of people who share the same culture, language, and traditions. They are just one of the many different groups of people who live in Bosnia and Herzegovina.
You might be wondering why we're talking about the Croats specifically. Well, in Bosnia and Herzegovina, there are three "constituent peoples" - that means three groups of people who are recognized as having a special status in the country. These groups are the Croats, the Bosniaks, and the Serbs.
Each of these groups has their own language, traditions, and beliefs, but they are all citizens of Bosnia and Herzegovina. The government of the country is supposed to represent all of these groups equally, even though they have different cultures and histories.
So, the Croats of Bosnia and Herzegovina are just one part of the country's population, but they are an important part because they have their own unique culture and identity.