Kansas

Kansas is a world mentioned on Once Upon a Time.

Kansas is based on the location of the same name from the novel The Wonderful Wizard of Oz. It is also loosely based on the real life state of the same name in the United States of America.

Background
Kansas is loosely based on Kansas, USA in the Land Without Magic. As such, parts of the land is assumed to be farmland. An example would be Dorothy's home. However, despite sharing resemblance with the Land Without Magic, there's a strong presence of magic that causes the existence of random cyclones popping throughout the land. The inhabitants, however, do not believe in the existence of magic and assumes their world is the only one in existence. This is shown when Dorothy's family tries to have her committed to an asylum after her return from the Land of Oz.

It is widely speculated and assumed that Kansas, just like various other worlds, was affected by the Evil Queen's curse in 1983 which likely cause the land to be frozen in time for twenty-eight years. Time is later unfrozen when the curse weakened following Emma Swan's arrival to Storybrooke.

Before First Curse
Somehow, a failed circus performer named Walsh finds himself in the Land of Oz. Using tricks learnt in Kansas, Walsh masquerades as a wizard and seized control of Emerald City. ("Kansas")

During a storm, a cyclone transport Dorothy and her farmhouse to the Land of Oz. There, she battles with the Witch of the West and presumably kills her with water. After returning home via the silver slippers, Dorothy tells her family of her time in the Land of Oz; however, everyone but Aunt Em believes she is delusional. The family tries to commit her to an asylum, but Aunt Em interfered and stopped them from doing so. ("Kansas", "Ruby Slippers")

Years later, Aunt Em becomes sick. Before dying, Aunt Em gifts Toto, a pet dog, to Dorothy. Upon death, Aunt Em's soul ends up in the Underworld where she becomes the owner of a diner. During this time, Dorothy is alerted by the Munchkins that the witch she once killed, now known as the Wicked Witch of the West, is still alive and had taken over the Land of Oz. Donning the Silver Slippers, Dorothy, along with Toto this time, returns to the Land of Oz to defeat the Wicked Witch of the West. ("Our Decay", "Ruby Slippers")

Inhabitants

 * Dorothy Gale (formerly)
 * Emily Brown † (formerly)
 * Toto (formerly)
 * Walsh † (formerly)