Answer:
The strike interfered with the United States' mails and interstate commerce.
Option: (a)
Explanation:
- The skill of handling strikes and protests is an 'integral part of the traits' possessed by any leader as important as the President.
- One such example can be given of President Grover Cleveland who personally intervened in the 'Pullman Strike of 1894' and made the strikers withdraw the strike by telling them that the strike was not legitimate and ethically correct as it disturbed the mail service and also scrambled the interstate commerce.