Final answer:
During the Pullman Strike of 1894, President Grover Cleveland responded by sending in the army to protect Pullman's rail cars and ensure the delivery of the U.S. mail, while also forcing an end to the strike. The troops' presence led to the arrest and imprisonment of union leader Eugene V. Debs, and ultimately the strike ended with no labor gains.
Step-by-step explanation:
During the Pullman Strike of 1894, President Grover Cleveland responded by sending in the army to protect Pullman's rail cars and ensure the delivery of the U.S. mail. The government also ordered the strike to end, and when the union leader Eugene V. Debs refused, he was arrested and imprisoned for interfering with the mail. The presence of federal troops protected the hiring of new workers and effectively ended the strike.