Prom: An American Tradition- Text + Audio + Pictures+ Video- 9 June 2017
"Prom was born in the United States more than 100 years ago and has spread to other parts of the world.
In America, it has become an industry similar to the wedding business."
"In the United States, and increasingly in the United Kingdom and Canada, a promenade dance, most commonly called a prom, is a semi-formal (black tie) dance or gathering of high school students. This event is typically held near the end of the senior year (the last year of high school). Proms figure greatly in popular culture and are major events among high school students..."