Before I start, I would like to say that I am not positive. But I am going to try my best.
So I think the problem is the flooding. Flooding makes the ground moist. If the ground is moist it makes the ground really muddy. When the ground is all muddy you know that it is slippery and he wants to write down. This means that it causes a mudslide. The ground must’ve been some artist that I just broke down in then the mud slide down.
Answer: Flooding caused it, and the mud slide was the result.
I hope this helped you!
:)