What was the catastrophe in play antigone?

In the play "Antigone" written by Sophocles, the catastrophe refers to the tragic chain of events that lead to the deaths of several main characters. The catalyst for this catastrophe is Antigone's defiance of King Creon's order to leave her brother Polynices unburied. She goes against the edict, performing burial rites for her brother, and she is subsequently found guilty of disobedience.

Due to her act of disobedience, Creon sentences Antigone to be buried alive in a sealed cave. Despite attempts by Haemon, Creon's son and Antigone's betrothed, to save her, she refuses to be swayed and accepts her fate.

As the play unfolds, the catastrophe intensifies. Haemon, devastated by Antigone's fate, takes his own life within the cave where she is entombed. Upon learning of his son's death, Eurydice, Creon's wife and Haemon's mother, also takes her life, overcome with grief and despair.

The cumulative impact of these deaths brings profound sorrow and regret upon Creon. Recognizing his tragic error in judgement and the consequences it has wrought, Creon is left to grapple with the catastrophic aftermath of his decision. The play's conclusion serves as a poignant reflection on the dire consequences of hubris, inflexible pride, and the profound cost of defying natural laws and familial bonds.