Final answer:
The most celebrated postwar labor confrontation was the Pullman Strike of 1894, which became notable due to its impact on the national railroad system and the involvement of federal troops to end the strike.
Step-by-step explanation:
The most celebrated postwar labor confrontation was b) The Pullman Strike.
In the summer of 1894, workers in the factory town of Pullman, Illinois, declared a strike due to a decline in wages. This strike had a nationwide impact as it significantly disrupted the railway system. The action was supported by the American Railway Union and its leader, Eugene V. Debs. The federal government, viewing the strike as a threat to economic recovery, intervened with military force to end the conflict. Notably, this incident left a long-lasting impression on public opinion regarding labor strikes and workers' rights.
By contrast, the Homestead Strike occurred earlier in 1892 and involved steelworkers in Pennsylvania. It turned violent and was also suppressed by the intervention of federal troops. While it was significant, it did not have the same sweeping effect as the Pullman Strike on the national transportation system.