The Balkan Sprachbund refers to a group of languages in the Balkan region that share similar features due to close contact and cultural exchange. This linguistic area includes languages like Bulgarian, Romanian, Serbian, and Greek. Despite belonging to different language families, these languages exhibit common traits in grammar, vocabulary, and syntax. One notable characteristic of the Balkan Sprachbund is the use of definite articles, which are often attached to the end of nouns. Additionally, many of these languages have simplified their verb systems and adopted similar expressions. This convergence highlights how languages can influence each other through geographical and social interactions.