[Answer] Which city is the "Fireworks Capital of America?"

Step 1 : Introduction to the question "Which city is the "Fireworks Capital of America?""

...Lawrence County, Pennsylvania, is about 50 miles north of Pittsburgh in the western part of the state. It's the home of two of the world's best-known fireworks companies, the Fazzoni Brothers Fireworks Company and the Zambelli Fireworks Internationale and Pyrotecnico. New Castle has been home to these companies for over a century, gaining the city and Lawrence County the title of "Fireworks Capital of America." Each year it hosts its annual Fireworks Festival on the second Saturday in July. Source: WhereAndWhen.com

[Answer] This well-named Independence Day fireworks display in Addison, Texas, has been recognized by the American Pyrotechnics Association as one of the top 10 in the nation.

Step 1 : Introduction to the question " This well-named Independence Day fireworks display in Addison, Texas, has been recognized by the American Pyrotechnics Association as one of the top 10 in the nation. "

...1. Kaboom Town 2. Freedom Over Texas 3. The Big Display 4. Fireworks Over The Stadium

[Ans] How much do Americans spend on fireworks for the 4th of July, as of 2016?

Step 1 : Introduction to the question "How much do Americans spend on fireworks for the 4th of July, as of 2016?"

...How much do the 4th of July fireworks cost? For the Macy's Fourth of July Spectacular, more than 40,000 shells will be launched from six barges over the Hudson River in a span of 25 minutes. The "July Fourth Boston Pops Fireworks Spectacular" draws 500,000 spectators to view its show that cost a whopping $2.5 million in 2010. The Explosive Costs of Big Fireworks Displays | 

How much money is spent on fireworks on the Fourth of July? $675 Million Expected total for consumer sales of fireworks in the U.S. in celebration of July 4 this year, according to the American Pyrotechnics Association. That figure would represent a $13 million increase over last year, and $75 million more than the sales total of 2006.