Question: Who operates in the most countries around the globe, Dollar Tree or PPG Industries?

Context paragraphs:
1997 CART season: The 1997 PPG CART World Series season, the nineteenth in the CART era of U.S. open-wheel racing, consisted of 17 races, beginning in Homestead, Florida on March 2 and concluding in Fontana, California on September 28.  The PPG CART World Series Drivers' Champion was Alex Zanardi.  Rookie of the Year was Patrick Carpentier.  After a settlement with the Indianapolis Motor Speedway, CART had relinquished its exclusive license of the "IndyCar" trademark, resulting in the renaming of the Series for the first time since 1980.  This was also the last year of title sponsorship by PPG Industries, although the Driver's Championship continued to be known as the PPG Cup until 1999.

Dollar Tree: Dollar Tree, Inc. is an American chain of discount variety stores that sells items for $1 or less.  Headquartered in Chesapeake, Virginia, it is a Fortune 500 company and operates 13,600 stores throughout the 48 contiguous U.S. states and Canada.  Its stores are supported by a nationwide logistics network of eleven distribution centers.  The company operates one-dollar stores under the names of Dollar Tree and Dollar Bills.  The company also operates a multi-price-point variety chain under Family Dollar.

Transitions Optical: Transitions Optical was founded in 1990.  In 1991, Transitions Optical became the first company to commercialize and manufacture plastic photochromic lenses.  From inception the company has been a joint venture between PPG Industries (51%) and Essilor (49%). .  In April 2014, Essilor acquired the 51% stake of PPG in Transitions.

PPG Place: PPG Place is a complex in downtown Pittsburgh, Pennsylvania, consisting of six buildings within three city blocks and five and a half acres.  Named for its anchor tenant, PPG Industries, who initiated the project for its headquarters, the buildings are all of matching glass design consisting of 19,750 pieces of glass.  The complex centers on One PPG Place, a 40-story office building.  Groundbreaking ceremonies occurred on January 28, 1981.  The complex buildings opened between 1983 and 1984, and a dedication ceremony took place on April 11, 1984.  Total cost of construction was $200 million ($ million today).  The buildings were sold by The Hillman Company to Highwoods Properties in 2011.

Linwood, North Carolina: Linwood is a small unincorporated community (ZIP Code 27299) just south of Lexington in Davidson County, North Carolina, United States.  The area contains operations of several important companies in Davidson County, including Keply Hardwood, Legget-Platt, PPG Industries, and Halyard Health.  Three major transportation systems serve the area: Interstate 85, the Davidson County Airport, and Norfolk Southern Railway's Spencer classification yard.  Linwood was named for the nearby plantation of William Rainey Holt (1798-1868), a physician and early innovator in farming techniques.  Part of the community (mainly the area industries) has been annexed by the city of Lexington.  Public High Schools that have districts that are in Linwood are Central Davidson High School and West Davidson High School.

Pittsburgh Plate Glass Company Building: The Pittsburgh Plate Glass Company Building, also known as the Northern Implement Company and the American Trio Building, is a warehouse building in downtown Minneapolis, Minnesota.  PPG Industries of Pittsburgh constructed the structure.  It was designed by locally notable firm Kees and Colburn and shows strong influences of noted architect Louis Sullivan.  The arches in the top floor windows are modeled after Louis Sullivan's designs, which in turn were influenced by Henry Hobson Richardson's Richardsonian Romanesque style.  The corners of the building are subtly chamfered in at the bottom and rise toward a flaring cornice at the top, echoing John Wellborn Root's design of the Monadnock Building in Chicago.

Charles Bunch: Charles E. Bunch (born c. 1950) is an American businessman who served as the chairman and chief executive officer of PPG Industries, Inc., until succeeded by Michael H. McGarry on September 1, 2015.  Since 2002, he had been a director and prior to becoming president and chief executive officer in March 2005 and chairman and chief executive officer in July 2005, Bunch was president and chief operating officer from July 2002.  He was the executive vice president from 2000 to 2002 and senior vice president of Strategic Planning and Corporate Services from 1997 to 2000.  Bunch is also a director of the H. J. Heinz Company and The PNC Financial Services Group, Inc.  He attended Georgetown University as an undergraduate and received his MBA from Harvard University in 1979.

John Pitcairn Jr.: John Pitcairn, Jr. (January 10, 1841 – July 22, 1916) was a Scottish-born American industrialist.  With just an elementary school education, Pitcairn rose through the ranks of the Pennsylvania railroad industry, and played a significant role in the creation of the modern oil and natural gas industries.  He went on to found the Pittsburgh Plate Glass Company (now PPG Industries), an early industry innovator which quickly grew into the largest manufacturer of plate glass in the United States, and amassed one of the largest fortunes in the United States at the time.

Christown Spectrum Mall: Chris-Town Mall is the oldest operating mall and was the third shopping mall built in Phoenix, Arizona, located on Bethany Home Road and 19th Avenue.  The property currently is known as Christown Spectrum Mall, derived from Chris-Town Mall and Phoenix Spectrum Mall, names previously used in the past.  Today it exists as an enclosed shopping mall, although the enclosed portion of the mall was greatly reduced when redevelopment changed the configuration closer to a power centre.  The Christown Spectrum Mall's anchor stores are JCPenney, Costco, SuperTarget, Walmart Supercenter, Big 5 Sporting Goods, Dollar Tree, PetSmart and Ross Dress for Less.  When the JCPenney was added back to the mall, access to PetSmart, Target, Dollar Tree and Ross Dress for Less was cut off from inside, making only JCPenney, Costco, Big 5 Sporting Goods, and Walmart accessible from the inside.  Christown Spectrum Mall also has a Walgreens and a Harkins Theatres 14 as out-parcel anchors.

PPG Industries: PPG Industries, Inc. is an American Fortune 500 company and global supplier of paints, coatings, specialty materials, and fiberglass.  With headquarters in Pittsburgh, Pennsylvania, PPG operates in more than 70 countries around the globe.  By revenue it is the largest coatings company in the world.  It is headquartered in PPG Place, an office and retail complex in downtown Pittsburgh, and is known for its glass facade designed by Philip Johnson.

Supporting paragraphs: Dollar Tree PPG Industries
Answer: PPG Industries