Final answer:
Changing a story's setting to one hundred years ago would affect the mood, historical impact, characters, and could alter the narrative's trajectory by changing its political and cultural commentary.
Step-by-step explanation:
If a story took place one hundred years ago instead of in its actual setting, there could be significant changes to the mood and outcome of the story. When writers use historical settings, they create a framework based on historical accuracy, while the character development can be fictional. The time period affects the language, social circumstances, and can even intensify or minimize the historical impact of the story.
In altering the temporal setting of a narrative, the author might need to adjust characters and events to fit the societal norms, technology, and historical facts of that period. A shift in time could therefore alter the narrative trajectory significantly.
For example, Victor Hugo's Les Misérables is deeply intertwined with the historical context of the French Revolution. Changing this setting to one hundred years earlier or later would change the story's political and cultural commentary, and the characters' interactions with historical figures would be altered dramatically, thereby shifting its narrative trajectory and potential political agendas that the text might put forth.