Pretend you're talking to a friend, then insert the questionable clause into the dialogue. Although Maxine and Beulah were excited about the party. More information is needed. There is no dependent clause in a simple sentence. Bubba ate fourteen tofu dogs with ketchup.
Compound sentences contain two or more independent clauses and no dependent clause.
Complex Sentences contain one independent clause and one or more dependent clauses. After he ate the chips, Bubba staggered woozily to the car, visions of Pepto-Bismol dancing in his head.