1) Fictional dimension 2) It lacks topographic relief 3) Kansas 4) Level region 1) Mesa 
Flatland: A Romance of Many Dimensions is an 1884 satirical novella by the English schoolmaster Edwin Abbott Abbott. Writing pseudonymously as `A Square`, the book used the fictional two-dimensional world of Flatland to comment on the hierarchy of Victorian culture; but the novella`s more enduring contribution is its examination of dimensions. ......
a region that lacks appreciable topographic relief.
Term used to describe tricks performed on a flat slope without obstacles.