Answer:
Politician like William M. Tweed, more known as Boss Tweed, was similar to industrial magnate like Carnegie and Rockefeller because he, like Carnegie and Rockefeller, had a lot of control over different things. He was an advisor at the gas companies and various banks, he was a director of the Erie Railroads so all of these possesions directly linked him to events happening in the country - U.S. economy and government related events.
The USS Maine exploded in Cuba’s Havana harbor. This ignited the war because the US believed that the Spaniards had something to do with it.
It’s the office of Personnel Management!!