Question: When was the publishing group founded that the Univeristy Press of America belongs to?

Context articles: University Press of America
Atria Publishing Group
Bedford-St. Martin's
Nature Publishing Group
Magna Publishing Group
Compact Verlag
Bixio Music Group
Disney Publishing Worldwide
Droemer Knaur
Rowman &amp; Littlefield

University Press of America is an academic publisher based in the United States.
 Part of the independent Rowman & Littlefield Publishing Group, it was founded in 1975 and states that it has published "more than 10,000 academic, scholarly, and biographical titles in many disciplines".
 It acquired Rowman & Littlefield in 1988 and took that name for the parent company.
Atria Publishing Group is a general interest publisher and a division of Simon & Schuster.
 The publishing group launched as Atria Books in 2002.
 The Atria Publishing Group was later created internally at Simon & Schuster to house a number of imprints including Atria Books, Atria Trade Paperbacks, Atrai Books Espanol, Atria Unbound, Washington Square Press, Emily Bestler Books, Atria/Beyond Words, Cash Money Content, Howard Books, Marble Arch Press, Strebor Books, 37 Ink, Keywords Press and Enliven Books.
 Atria is also known for creating innovative imprints and co-publishing deals with African-American writers as well as known for experimenting with digital or non-traditional print formats and authors.
Bedford/St.
 Martin's is an American publishing company specializing in humanities college textbooks. Bedford/St.
 Martin's is part of the Bedford, Freeman, and Worth Publishing group owned by the Macmillan Publishers, which is in turn owned by the Stuttgart-based Georg von Holtzbrinck Publishing Group.
 Its offices are located in Boston and New York.
 The company was founded in 1981 by Charles Christensen and Joan Feinberg as Bedford Books, an imprint of St. Martin's Press.
 The current president is Denise Wydra.
Nature Publishing Group is a division of the international scientific publishing company Springer Nature that publishes academic journals, magazines, online databases, and services in science and medicine.
 Nature Publishing Group's flagship publication is "Nature", a weekly multidisciplinary journal first published in 1869.
 It also publishes "Nature" research journals, "Nature Reviews" journals (since 2000), and society-owned academic journals.
 Springer Nature also publishes "Scientific American" in 16 languages, a magazine intended for the general public.
 In 2013, Nature Publishing Group bought a controlling stake in Frontiers.
Magna Publishing Group, or Magna Publishing Group, Inc., is a publishing company headquartered in Paramus, New Jersey.
 Founded in 1975, the company publishes a number of magazine titles and is one of the largest publishers of pornographic magazines in the United States with titles such as Club, Swank, Genesis, Gallery, Gent, as well as "nearly 60 total adult titles".
 The Company has only 1 to 10 employees.
 On December 22, 2015 Magna Publishing Group was purchased by 1-800-PHONESEX for an undisclosed amount.
Compact Verlag is a German publishing house, based in Munich.
 It was founded in 1976 by the publisher Friedrich Niendieck.
 In October 2008, Niendieck announced the sale of its publishing group to the publishing company European Professional Publishing Group (EPPG).
 Since September 2014, Compact Verlag belongs to Vermar, which has its headquarters in Berlin.
 Compact publishes about 1,000 books and electronic products.
 In addition, licenses have been issued in over 35 countries.
Bixio Music Group, a New York corporation, is the American branch of Gruppo Editoriale Bixio , or Bixio Publishing Group, the first Italian music publishing company.
 The Bixio Publishing Group, currently based in Rome, Italy, was established in Naples during the 1920s by composer Cesare Andrea Bixio.
 Bixio Music Group, an ASCAP member since 1992, was established to facilitate licensing of the Bixio Publishing Group catalogue that includes not only musical compositions but also sound recordings by related labels under the Group in the territories of North and South America.
Disney Publishing Worldwide (DPW), formerly known as The Disney Publishing Group and Buena Vista Publishing Group, is the publishing subsidiary of Disney Consumer Products and Interactive Media, a subsidiary of The Walt Disney Company.
 Its imprints include Disney Editions, Hyperion Books for Children, Disney Press, Kingswell and Freeform.
 It has creative centers in Glendale, California, and in Milan, Italy.
Droemer Knaur is a publishing group based in Munich.
 The group consists of the book publishers Droemer, Knaur, the Pattloch Publisher and O.W. Barth.
 Droemer Knaur belongs to the Georg von Holtzbrinck Publishing Group.
 In addition, the publishing group cooperates with neobooks, a free provider under the self-publishing platform for self-publishing e-books.
Rowman & Littlefield Publishing Group is an independent publishing house founded in 1949.
 Under several imprints, the company offers scholarly books and journals for the academic market, as well as trade books.
 Rowman & Littlefield is the world's largest publisher in museum studies.