![How Trick-or-Treating Became a Halloween Tradition](https://ic-cdn.flipboard.com/history.com/94d94d16ea412b9b5259c2004a0ec7160b1935dd/_xlarge.jpeg)
Why do children dress in costume and knock on strangers' doors to ask for treats on Halloween? The practice can be traced to the ancient Celts, early …
* This article was originally published here. * * * * * Visit Al Cannistra Flipboard Curations here.