"Common Cause" is set during World War I and explores the impact of the war on American society. The novel is a reflection on the broader societal and political changes brought about by the war and is designed to capture the mood and challenges of the era.The story follows the experiences of several characters whose lives are intertwined by the conflict. The novel delves into the personal and social repercussions of the war, focusing on how it affects individuals and their relationships. The plot includes elements of romance, political intrigue, and social commentary.