Complex sentence: A sparkler is a type of hand-held firework that burns slowly while emitting colored flames, sparks, and other effects, though in U.S. sparklers are now classified as novelties by the federal government and are not defined as consumer fireworks.
Split into simpler sentences: A sparkler is a type of hand-held firework that burns slowly while emitting colored flames, sparks, and other effects. Though in U.S. sparklers are classified as novelties by the federal government and are not defined as consumer fireworks.