Answer: d. Successful because there were no legal protections for unions.
Explanation:
The Pullman Strike (1894) was a broad railroad strike and boycott in the Midwest. The federal government responded by using an injunction to break a strike for the very first time. The fear of more violence lessened public support for the unions, and the courts began to limit union activity.
Furthermore, the federal government took on the intervention in strikes and added the use of the federal military in suppressing strikes.
