What would be the main purpose of focusing this type of abuse on a tax collector? ​

What are the two powers that the federal and state governments share?

In ohio in 1872, the cleveland massacre was a violent labor dispute at standard oil refineries in cleveland. a takeover by standard oil of the refineries in cleveland. an attempt to stop standard oil from becoming a monopoly. a failed attempt by standard oil to take over other refineries.

What evidence is there in this document that the policy was a good idea?