A volcano eruption
Janie swore that she would marry Mrs. Tuner's brother
He wants Mrs. Turner to see how cruel he can be to a woman so that she wouldn't look down on him
Janie accuses Tea Cake of being with Nunkie again, resulting in a brutal fracas.
He wants to show Mrs. Turner that he is the boss of Janie; no one else can control her
Here's an interesting quiz for you.