Answer:
Fireworks are explosions of numerous small pellets of black powder called stars. The main ingredient in fireworks is black powder, which explodes when ignited (lit on fire). In addition to black powder, firework stars contain different chemicals or metals to create certain colors.Around 200 BC, the Chinese unintentionally invented firecrackers by tossing bamboo into fire, but it took another thousand years before true fireworks came alive. As the story goes, around 800 AD, an alchemist mixed sulfur, charcoal, and potassium nitrate (a food preservative) hoping to find the secret to eternal life.
According to my perspective fireworks should be illegal as each year serious injuries and millions of dollars in property loss occur from wildfires sparked by fireworks.They're dangerous and can cause severe damage to living and Environmental things.Moreover,they cause pollution.
Hope it helps!