Question: What mystery play can be dated back to medieval theater in the early 15th century?

Related documents: [0]  [DOC] Medieval theatre refers to theatrical performance in the period between the fall of the Western Roman Empire in the 5th century A.D. and the beginning of the Renaissance in approximately the 15th century A.D. Medieval Theatre covers all drama produced in Europe over that thousand-year period and refers to a variety of genres, including liturgical drama, mystery plays, morality plays, farces and masques. Beginning with Hrosvitha of Gandersheim in the 10th century, Medieval drama was for the most part very religious and moral in its themes, staging and traditions. The most famous examples of Medieval plays are the English cycle dramas, the York Mystery Plays, the Chester Mystery Plays, the Wakefield Mystery Plays and the N-Town Plays, as well as the morality play, "Everyman". One of the earliest surviving secular plays in English is "The Interlude of the Student and the Girl" (c. 1300). [END] 
[1]  [DOC] The Chester Mystery Plays is a cycle of mystery plays dating back to at least the early part of the 15th century. [END]  
Answer: The Chester Mystery Plays
The Chester Mystery Plays