Why is guy de maupassant known as one of the fathers of the modern short story?

Guy de Maupassant is considered a father of the modern short story because he perfected the form by focusing on everyday life, psychological depth, and irony. His stories often have a twist or unexpected ending, in contrast to earlier romantic and idealized tales. Maupassant's concise writing style and ability to capture the complexities of human nature have had a lasting impact on the development of short fiction.