own holidays in the United States. People of all ages celebrate by wearing spooky costumes, going trick-or-treating, and carving pumpkins. But Halloween is also one of the world's oldest holidays, with many traditions stemming from ancient Celtic and early Christian celebrations. This title delves into the history of this candy-filled holiday, exploring how its early customs developed into modern ones. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.