If Carmen Sandiego stole the crown of St. Stephen and escaped across the Hortobagy plain, then she would have committed a crime where?

Carmen Sandiego stealing the crown of St. Stephen would mean she is committing the crime in Hungary. The crown is a significant national symbol of Hungary and is associated with the first king of Hungary, Stephen I. The Hortobágy Plain is a vast area located in eastern Hungary, known for its unique landscapes and traditional herding culture.

Given that the crown itself is an important historical artifact rooted deeply in Hungarian culture and national identity, and that the Hortobágy Plain is situated within the boundaries of Hungary, it clearly indicates the location of the crime. Therefore, the context of the crown's significance and the geographical setting confirms that the crime occurs within Hungary's borders.