As if every day weren’t always fast food day, the industry itself will celebrate its mammoth economic impact on Saturday, Nov. 16, recognized as National Fast Food Day.

Merriam-Webster dictionary first recognized the term “fast food” in 1951. Fast food is usually defined as any meal with low preparation time and served to a customer in a packaged form for quick dine-in, take-out or drive-thru.

Globally, fast food generates revenue of  more than $570 billion, according to FranchiseHelp.com. In the U.S., the industry was estimated to be worth $256 billion in 2018, according to figures from Statista.

»READ: McDonald's adding more breakfast chicken items to menu

There are more than 286,000 fast food businesses in the U.S. today, according to IBISWorld, employing more than 4.6 million people in part- and full-time positions.

Chick-fil-A Dethrones In-N-Out as America’s Favorite Fast Food . Consumers from across the United States recently ranked the country’s most popular fast food chains. . The survey, conducted by Market Force polled 7,600 people and found that Chick-fil-A had the highest overall score, with a 79% loyalty rating. Although In-N-Out reigned supreme in 2017 and 2018, it fell short in 2019 with only a 73% loyalty rating. In-N-Out is still America’s favorite burger joint however, beating out Five Guys, Dairy Queen

According to the History of Fast Food, America's first hamburger chain was White Castle in 1921. The first franchises appeared also in 1921, and the first restaurant franchise appeared in 1930s by Howard Johnson.

»MORE: 'The war is real': Popeyes, Chick-fil-A beef over best chicken sandwich

Fast Food Chain Popeyes to Debut Its First Sandwich. The item, which premieres next week and contains pickles, is very similar to rival Chick-fil-A's classic chicken sandwich. It will be served on a toasted brioche bun along with a choice of either a classic mayo or spicy Cajun spread. With its new sandwich, Popeyes is hoping the item will help out same-store sales growth, which increased 3% in the most recent quarter. The nationwide release also comes as Popeyes attempts to keep up with Chick-fil-A'

As automobiles became more popular, drive-in restaurants began popping up. The first McDonald’s with fast food was opened by the McDonald brothers in 1948.

Today, the U.S. has the world’s largest fast food industry, with American fast food restaurants located in more than 100 countries.