Trump's Freedom 250 fireworks in Washington, D.C. have been officially confirmed as the largest display in history with 840,537 fireworks on the Fourth of July.
https://www.foxnews.com/politics/trumps-4th-july-fireworks-display-national-mall-confirmed-largest-history
https://www.foxnews.com/politics/trumps-4th-july-fireworks-display-national-mall-confirmed-largest-history