Final answer:
In jail, Miguel de Cervantes wrote several plays, including The Traffic of Algiers and The Siege of Numantia. He is also famous for his novel, Don Quixote.
Step-by-step explanation:
In jail, Miguel de Cervantes wrote several plays, most of which are not extant today. However, two of his surviving plays are The Traffic of Algiers and The Siege of Numantia. Cervantes is also well-known for his novel, Don Quixote, which is considered one of the greatest works of Spanish literature.