Describe the life of the Munchkins.

Before Dorothy unexpectedly dropped in (quite literally) from Kansas, life for the Munchkins was pretty hard. For years, they'd been enslaved by the Wicked Witch of the East, who made them toil for her night and day. Thankfully, the evil witch dies when Dorothy's farm house drops right on top of her head. In Baum's original story, the Munchkins don't dance around excitedly, singing, "Ding, dong, the witch is dead!" as they do in the film version, but they are understandably pleased and relieved to see the back of their erstwhile oppressor.
The Munchkins are so grateful to Dorothy for getting rid of the revolting old tyrant queen that they, along with the Good Witch of the North, give her the Wicked Witch's charmed silver shoes as a thank you present. But all Dorothy wants is to return home as soon as possible. So the Munchkins advise her to follow the Yellow Brick Road, which will take her to Emerald City and the Wonderful Wizard of Oz himself, the only man who can help her and Toto get back to Kansas.