The following three options are compound sentences:
- The French drink strong black coffee mixed with hot milk; the Italians drink small cups of espresso.
- According to my Spanish teacher, Basques have a unique culture, and their language is unrelated to any other world language.
- My aunt and uncle love to travel in their camper, and they can stop wherever they want to.
These sentences each contain two independent clauses connected by coordinating conjunctions or a semicolon.