The U.S. Army was founded on June 14, 1775, when the Continental Congress authorized enlistment of riflemen to serve the United Colonies for one year. For more on the history of the U.S. Army birthday, click here: the Army birthday.
Directory publishing is a specialized genre within the publishing industry. These publishers produce mailing lists, telephone books, and other types of directories. With the advent of the Internet, many of these directories are now online.
B2B and B2C. An industry may include both B2B and B2C companies. The book-publishing industry is a good example. Authors market their manuscripts to book publishers. Both the author and the book publisher are in a B2B relationship. The publisher prints and markets the books to booksellers, both online and in retail stores.