Wikipedia page about this book: https://en.wikipedia.org/wiki/Flatland

Release date is 1994-01-01

"Flatland: A Romance of Many Dimensions" by Edwin Abbott Abbott is a satirical novella published in 1884. The story takes place in a two-dimensional world inhabited by geometric shapes, where social status is determined by the number of one's sides. When a Square encounters beings from other dimensions—including a one-dimensional Lineland and a three-dimensional Spaceland—his understanding of reality is profoundly challenged. Through this imaginative premise, Abbott satirizes Victorian class and gender hierarchies while exploring the concept of dimensions beyond human perception. (This is an automatically generated summary.)

Original publication data not identified