Which best explains how railroad companies were able to standardize their timetables in 1883?

In 1883, railroad companies standardized their timetables by adopting a uniform system of time zones, which divided the country into four distinct time zones. This change was prompted by the increasing complexity of scheduling trains across vast distances, as local times varied significantly. The implementation of standardized time helped reduce confusion and improve safety and efficiency in train operations. The initiative was largely driven by the American Railway Association, which coordinated the transition to this new system.