"A lively look at the history of chewing gum . Energetic graphic design incorporates swaths of bright gum-ball colors with dashes of bubble-gum pink along with plenty of photographs and whimsical cartoon illustrations . A diverting look at the rest of the story for a familiar product." -- Kirkus Reviews "The How It Happened! series provides energetic, upbeat histories of everyday items that should be familiar to most kids. Pages are filled with eye-catching graphics, sidebars, photos, illustrations, and accessible text pepper with numerous exclamation points." -- Booklist.