Final answer:
Joseph Pulitzer, a prominent newspaper publisher and journalist, accuses someone of being behind the events and claims a previous agreement.
Step-by-step explanation:
The person who accuses someone of being behind the events that are unfolding and claims that there was a previous agreement is C) Pulitzer. Joseph Pulitzer, a prominent newspaper publisher and journalist, often accused individuals or organizations of wrongdoing through his newspaper publications, including the famous Pulitzer Prize-winning newspapers, The New York World and The St. Louis Post-Dispatch.