Delivery Sets Guinness World Records® Title for Highest Altitude Pizza Delivery on Land as Pizza Hut Climbs to New Heights with Milestone Opening in Tanzania PLANO, TX, 2016-May-13 — /EPR Retail News/ — In recognition of entering its 100th country, Pizza Hut, a division of Yum! Brands, Inc. (NYSE: YUM) and the world’s largest pizza restaurant…