Question: The Oregon Trail is a 2009 iOS and DSiware version of a computer game that was designed to teach school children about the realities of pioneer life in what century?

full_context: Document 1: The Sims 3: The Sims 3 is the third major title in the life simulation video game developed by The Sims Studio (Maxis) and published by Electronic Arts. It is the sequel to the best-selling computer game, "The Sims 2". It was first announced that it was in development for PlayStation 3 and Wii in November 2006, and later announced for OS X and Microsoft Windows. It was first released on June 2, 2009 simultaneously for OS X and Microsoft Windows – both versions on the same disc. Smartphone versions were also released on June 2, 2009. Consoles versions were released for PlayStation 3, Xbox 360, and Nintendo DS in October 2010 and a month later for the Wii. The Windows Phone version was made available on the Windows Phone Store on October 15, 2010. A Nintendo 3DS version, released on March 27, 2011, was one of its launch titles.
Document 2: Otto Matic: Otto Matic is a 2001 action-adventure video game developed by Pangea Software and published by Aspyr Media for Mac OS 8,Mac OS 9 and Mac OS X. It came bundled with iMac G3 and G4 computers. The game was later ported by Ideas From the Deep to Microsoft Windows in 2004. An iPhone OS port, titled "Otto Matic: Alien Invasion", was released by Pangea in 2009.
Document 3: The Oregon Trail 3rd Edition: The Oregon Trail 3rd Edition (full title: The Oregon Trail 3rd Edition: Pioneer Adventures) is the second sequel to the 1982 edutainment video game "The Oregon Trail" after "Oregon Trail II". It was developed by MECC and released on Dec 31, 1997.
Document 4: The Oregon Trail (video game): The Oregon Trail is a computer game originally developed by Don Rawitsch, Bill Heinemann, and Paul Dillenberger in 1971 and produced by the Minnesota Educational Computing Consortium (MECC) in 1974. The original game was designed to teach school children about the realities of 19th-century pioneer life on the Oregon Trail. The player assumes the role of a wagon leader guiding a party of settlers from Independence, Missouri, to Oregon's Willamette Valley via a covered wagon in 1848.
Document 5: Assassin's Creed II: Discovery: Assassin's Creed II: Discovery is a video game for the Nintendo DS and iOS, part of the "Assassin's Creed" series of video games. Ubisoft's producer Ben Mattes officially revealed the development of the game in Apple Inc.'s keynote speech on September 9, 2009, for a November 17 release. The iOS version was delayed, but Ubisoft did not comment with a reason for the delay. In contrast to "", the previous title in the "Assassin's Creed" series to be on these devices, "Discovery" is a 2.5D side-scroller. Both iPhone and DSi users are able to use their devices' camera function to display portraits as wanted posters in-game. "Discovery" was released concurrently with "Assassin's Creed II" and "". The game takes place within "Assassin's Creed II" between The Battle of Forli DLC in Sequence 12 and Bonfire of the Vanities DLC in Sequence 13.
Document 6: Oregon Trail: The Oregon Trail is a 2170 mi historic east–west, large-wheeled wagon route and emigrant trail in the United States that connected the Missouri River to valleys in Oregon. The eastern part of the Oregon Trail spanned part of the future state of Kansas, and nearly all of what are now the states of Nebraska and Wyoming. The western half of the trail spanned most of the future states of Idaho and Oregon.
Document 7: The Oregon Trail: American Settler: The Oregon Trail: American Settler (also known as "The Oregon Trail: Settler") is a freemium game developed by Gameloft and released on November 17, 2011. It is a spin-off of the 1982 video game "The Oregon Trail". The game was released in twelve different languages including English, Spanish, French, German, Italian, Japanese, Korean, Portuguese, Russian, Standard Chinese, Simplified Chinese and Traditional Chinese.
Document 8: The Oregon Trail (2009 video game): The Oregon Trail is a 2009 iOS and DSiware version of the 1982 video game "The Oregon Trail". The simulation game was published by Gameloft.
Document 9: The Oregon Trail (2011 video game): The Oregon Trail (also known as The Oregon Trail 40th Anniversary Edition) is a 2011 version of the 1971 video game "The Oregon Trail". The virtual life game was developed by SVG Distribution and published by Crave Entertainment on December 6, 2011 for the Wii and Dec 13, 2011 for 3DS.
Document 10: The Amazon Trail: The Amazon Trail is an educational computer game created by MECC. It was inspired by the popularity of "The Oregon Trail", featuring the areas surrounding the Amazon River and some of its tributaries. In this 2-D adventure, the player is asked to set out on a journey up the Amazon, hoping to make it to the lost Inca village of Vilcabamba. Along the way, the player learns about the people who live on and use the river for their survival. "The Amazon Trail" is known for being significantly more difficult than its predecessors in the franchise, such as "The Oregon Trail". There are two sequels, "Amazon Trail II" and "Amazon Trail 3rd Edition". It was released in 1994.
Document 11: Oregon Trail II: Oregon Trail II is an educational video game released by MECC in 1995. It was published by SoftKey Multimedia. It is a revised version of the original "Oregon Trail" computer game. It was redesigned with the help of American Studies PhD Wayne Studer. In contrast to the original version of the game, "Oregon Trail II" made an effort to include greater roles for women and racial minorities.
Document 12: The Oregon Trail (series): The Oregon Trail is a series of educational computer games that began with the very first edition originally developed by Don Rawitsch, Bill Heinemann, and Paul Dillenberger in 1971 and produced by the Minnesota Educational Computing Consortium (MECC) in 1974. The original game was designed to teach school children about the realities of 19th-century pioneer life on the Oregon Trail. The player assumes the role of a wagon leader guiding a party of settlers from Independence, Missouri, to Oregon's Willamette Valley via a covered wagon in 1848.
Document 13: Game Dev Story: Game Dev Story is a simulation video game developed and published by Kairosoft for Microsoft Windows, iOS, and Android. It was released for Windows in April of 1997 , for iOS and Android on October 9, 2010, and for Windows Phone on July 6, 2015. The game follows a player-controlled video game company and its attempts to expand into a sales powerhouse over time. As a simulation, the game and the direction of the company is controlled by the player, following a parallel timeline of the video game industry and its history. The game was released to positive reviews, with many reviewers focusing on "Game Dev Story"' s addictive aspects and its witty references to video game pop culture.
Document 14: The Sims (video game): The Sims is a 2000 strategic life-simulation video game developed by Maxis and published by Electronic Arts. It is a simulation of the daily activities of one or more virtual people ("Sims") in a suburban household near a fictional city. The game's development was led by game designer Will Wright who is also known for developing the "SimCity" series. "The Sims" original series had a total of seven expansion packs produced, with expansions adding new items, characters, skins, and features. The game has had several subsequent sequels; "The Sims 2", "The Sims 3" and "The Sims 4".
Document 15: Old Man's Journey: Old Man's Journey is an adventure video game, developed and published by Broken Rules. The game was released for Android, iOS, macOS, and Windows devices on 18 May 2017. The game received "generally favorable" reviews, according to Metacritic, a video game review aggregator.
ground_truth: 19th-century