input: Coburn was born in Casper, Wyoming, the son of Anita Joy (nee Allen) and Orin Wesley Coburn. Coburn's father was an optician and founder of Coburn Optical Industries, and a named donor to O. W. Coburn School of Law at Oral Roberts University, dedicated in 1979 and closed in 1985.  Coburn graduated with a B.S. in accounting from Oklahoma State University, where he was also a member of Sigma Nu fraternity. In 1968, he married Carolyn Denton, the 1967 Miss Oklahoma; their three daughters are Callie, Katie and Sarah, a leading operatic soprano. One of the Top Ten seniors in the School of Business, Coburn served as president of the College of Business Student Council.  From 1970 to 1978, Coburn served as manufacturing manager at the Ophthalmic Division of Coburn Optical Industries in Colonial Heights, Virginia. Under his leadership, the Virginia division of Coburn Optical grew from 13 employees to more than 350 and captured 35 percent of the U.S. market.  After recovering from an occurrence of malignant melanoma, Coburn pursued a medical degree and graduated from the University of Oklahoma Medical School with honors in 1983. He then opened Maternal & Family Practice in Muskogee, Oklahoma, and served as a deacon in a Southern Baptist Church. During his career in obstetrics, he has treated over 15,000 patients, delivered 4,000 babies and was subject to one malpractice lawsuit, which was dismissed without finding Coburn at fault. Coburn and his wife are members of First Baptist Church of Muskogee.  In November 2013, Coburn made public that he had been diagnosed with prostate cancer. In 2011, he had prostate cancer surgery while also surviving colon cancer and melanoma.

Answer this question "Where did he grow up?"
output: Casper, Wyoming,

Problem: Background: Richard Charles "Chuck" Bown Jr. (born February 22, 1954) is a former NASCAR champion. His last ride came in 1999. He currently lives with his wife in Asheboro, North Carolina. He is the brother of former fellow NASCAR competitor Jim Bown.
Context: In 1994, Bown moved back up to the Cup series, driving the No. 12 Ford Thunderbird for Bobby Allison. He won the pole for the Food City 500, setting a new track record. He was seriously injured in a wreck at Pocono Raceway which sidelined him for the season.  Bown returned to racing in 1995 in four Busch races, finishing ninth at Charlotte Motor Speedway in the No. 05 Key Motorsports Ford. He competed in nine Cup races in the No. 32 Chevrolet Monte Carlo for Active Motorsports, his best finish a 21st at Charlotte. In 1996, Bown drove for a variety of teams in the Busch Series, his best finish 21st at Darlington Raceway. He drove the Sadler Brothers Racing' No. 95 Ford in three Winston Cup Series events but only finished one race.  In 1997, Bown began racing in the Craftsman Truck Series, driving the No. 99 Ford F-150 for Roush Racing. Despite not winning a race, he had four top-fives and finished ninth in the standings. The next season, Bown qualified on the pole at the season opener at Walt Disney World Speedway, but finished 25th. After that race, he was released from Roush due to downsizing. He movted to the No. 57 CSG Motorsports Ford driving in six events before being released. He ended the season driving the No. 67 Chevrolet Silverado in a pair of races, finishing seventeenth at Phoenix.  In 1999, Bown returned to Hensley to drive their No. 63 Chevrolet. Despite a seventh-place finish at Charlotte, Bown was released from the team halfway into the season, and soon retired.
Question: What did Chuck Bown do in his final years?
Answer: In 1999, Bown returned to Hensley to drive their No. 63 Chevrolet.

Question: The Mississippian culture was a mound-building Native American civilization archeologists date from approximately 800 CE to 1600 CE, varying regionally. It was composed of a series of urban settlements and satellite villages (suburbs) linked together by a loose trading network, the largest city being Cahokia, believed to be a major religious center. The civilization flourished from the southern shores of the Great Lakes at Western New York and Western Pennsylvania in what is now the Eastern Midwest, extending south-southwest into the lower Mississippi Valley and wrapping easterly around the southern foot of the Appalachians barrier range into what is now the Southeastern United States. The Mississippian way of life began to develop in the Mississippi River Valley (for which it is named).

The Mississippi stage is usually divided into three or more chronological periods. Each period is an arbitrary historical distinction varying regionally. At a particular site, each period may be considered to begin earlier or later, depending on the speed of adoption or development of given Mississippian traits. The "Mississippi period" should not be confused with the "Mississippian culture". The Mississippi period is the chronological stage, while Mississippian culture refers to the cultural similarities that characterize this society.  The Early Mississippi period (c. 1000-1200 CE) had just transitioned from the Late Woodland period way of life (500-1000). Different groups abandoned tribal lifeways for increasing complexity, sedentism, centralization, and agriculture. Production of surplus corn and attractions of the regional chiefdoms led to rapid population concentrations in major centers.  The Middle Mississippi period (c. 1200-1400) is the apex of the Mississippi era. The expansion of the great metropolis and ceremonial complex at Cahokia (in present-day Illinois), the formation of other complex chiefdoms, and the spread and development of SECC art and symbolism are characteristic changes of this period. The Mississippian traits listed above came to be widespread throughout the region.  The Late Mississippi period (c. 1400-1540) is characterized by increasing warfare, political turmoil, and population movement. The population of Cahokia dispersed early in this period (1350-1400), perhaps migrating to other rising political centers. More defensive structures are often seen at sites, and sometimes a decline in mound-building and large scale, public ceremonialism. Although some areas continued an essentially Middle Mississippian culture until the first significant contact with Europeans, the population of most areas had dispersed or were experiencing severe social stress by 1500. Along with the contemporaneous Ancestral Pueblo peoples, these cultural collapses coincide with the global climate change of the Little Ice Age. Scholars theorize drought and the reduction of maize agriculture, together with possible deforestation and overhunting by the concentrated populations, forced them to move away from major sites. This period ended with European contact in the 16th century.

Using a quote from the above article, answer the following question: to what, though?
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Answer:
The Middle Mississippi period (c. 1200-1400) is the apex of the Mississippi era.