Answer + Explanation:
Khushwant Singh develops the setting in the novel "Train to Pakistan" through the use of vivid descriptions of the physical environment, cultural and religious practices, and political tensions. He provides detailed descriptions of the geography and architecture of the fictional village of Mano Majra, which is located near the border between India and Pakistan. He also depicts the daily life and customs of the Sikh and Hindu communities, as well as the tensions and conflicts between them. Additionally, he highlights the political situation in India during Partition and the impact it had on the characters and their relationships. Through these elements, Singh creates a rich and nuanced setting that serves as a backdrop for the events of the novel.