The Fourth of July has been celebrated across the nation since 1776. But when — and how — did Americans across the country agree to commemorate the holiday with a fireworks celebration?

Independence Day is always filled with festivities, and one of the many 4th of July traditions that always hold true is fireworks.

From sparklers to firecrackers to bottle rockets and Roman candles, the U.S. Postal System considers all fireworks to be hazardous and bans them from shipping.