The same thing that happened in the 19th century, "The Great Stink". The name is real and it describes an event from the past which would repeat if they started throwing waste again. The river would become so polluted that disease and contagion would begin to spread. In the 19th century, it was cholera. Now, nobody knows.
The answer is the king's murder
A participant in a group discussion can be an effective speaker by remaining concise and speaking on the same level as the other participants so as not to confuse them. The participants can also ask for feedback and ask if they need to clarify anything so the listeners are able to get the most out of the discussion. A speaker should also always come prepared and bringing notes and guidelines. I hope I helped!
