Question: The Ozark Highlands AVA includes land in what Missouri county that changed its name?
Context: The Upper Hiwassee Highlands AVA is an American Viticultural Area that includes land in three counties of northern Georgia and two counties of western North Carolina.  It is located near the southern end of the Blue Ridge Mountains and includes portions of the Georgia counties of Fannin, Towns, and Union and of the North Carolina counties of Cherokee and Clay.  The region is mainly in hardiness zone 7a. Texas County is a county located in the southern portion of the U.S. state of Missouri.  As of the 2010 census, the population was 26,008.  Its county seat is Houston.  The county was organized in 1843 as Ashley County, changing its name in 1845 to Texas, after the Republic of Texas. The Rattlesnake Hills AVA is an American Viticultural Area located in Yakima County, Washington.  United States Alcohol and Tobacco Tax and Trade Bureau (TTB) awarded Rattlesnake Hills its appellation status on March 20, 2006, making Rattlesnake Hills Washington's ninth federally recognized American Viticultural Area.  The Rattlesnake Hills AVA is entirely contained within the Yakima Valley AVA, which is in turn is entirely contained within the larger Columbia Valley AVA.  The hills form the northern boundary of Yakima Valley, and the AVA includes land between the north bank of the Sunnyside Canal and the entirety of the southern slopes of the Rattlesnake Hills between Outlook and the Wapato Dam.  The AVA is centered on the city of Zillah.  With elevations ranging from 850 ft to 3085 ft , this AVA contains the highest point in the Yakima Valley AVA Knights Valley AVA is an American Viticultural Area (AVA) in Sonoma County, California.  One of Sonoma County's original five AVAs, Knights Valley AVA was formally designated an American Viticultural Area on October 21, 1983.  Knights Valley AVA includes approximately 37000 acre .  Over 30 growers maintain the 2000 acre planted to wine grape vineyards.  The easternmost designated Sonoma County wine region, Knights Valley AVA has the warmest climate in the county.  The valley lies between the Alexander Valley AVA and Chalk Hill AVA wine regions to the west and the Mayacamas Mountains to the east.  Geographically, the appellation separates the rest of Sonoma County from the Napa Valley AVA. The Yadkin Valley AVA is an American Viticultural Area that includes land in seven counties of northwestern North Carolina.  The AVA encompasses an area of approximately 1400000 acre in the Yadkin River valley.  The Yadkin Valley AVA includes all of Wilkes, Surry, and Yadkin counties, and parts of Davie, Davidson, Forsyth and Stokes counties.  Yadkin Valley is home to more than three dozen wineries. The Ozark Highlands AVA is an American Viticultural Area located in southern Missouri in the Ozark Mountains.  The appellation includes land from just east of Jefferson City in the north to the Eleven Point River in the south, including parts of Phelps, Maries, Osage, Gasconade, Franklin, Crawford, Shannon, Dent, Texas, Reynolds, and Pulaski counties.  The AVA was established in 1987. The San Francisco Bay AVA is a large American Viticultural Area centered on the San Francisco Bay Area of Northern California.  The AVA includes the counties of Alameda, Contra Costa, Santa Clara, San Francisco and San Mateo as well as parts of Santa Cruz and San Benito counties.  The AVA was created in 1999 and encompasses over 1500000 acre .  The AVA falls within the larger Central Coast AVA, four smaller designated AVAs are contained within it: Livermore Valley AVA, Pacheco Pass AVA, San Ysidro District AVA, and Santa Clara Valley AVA. The Yorkville Highlands AVA is an American Viticultural Area located in southern Mendocino County, California.  The Yorkville Highlands separate Sonoma County's Alexander Valley AVA from Mendocino County's Anderson Valley AVA.  The soil in the Yorkville Highlands is rocky with a high gravel content, which provides excellent drainage.  During the day, the climate is cooler than Alexander Valley but warmer than Anderson Valley, while at night the highlands are cooler than the surrounding areas. The Arkansas Mountain AVA is an American Viticultural Area located in the Ozark Mountains of northwestern Arkansas.  It is part of the larger Ozark Mountain AVA, which also includes regions in Missouri and Oklahoma.  The smaller Altus AVA is entirely contained within the Arkansas Mountain AVA.  The Arkansas Mountain AVA includes 2880000 acre , making it the ninth largest AVA as of 2008. The Columbia Valley AVA is an American Viticultural Area which lies in the Columbia River Plateau, through much of central and southern Washington State, with a small section crossing into the neighboring state of Oregon.  The AVA includes the drainage basin of the Columbia River and its tributaries through much of Washington.  Allen Shoup, president of Washington State's largest winery Chateau Ste. Michelle, understood the importance of obtaining appellation status for Washington State to grow the reputation of the vineyards.  He hired Drs. Wade Wolfe and Walter Clore to petition the federal government for appellation status, a request that was granted in 1984.  The Columbia Valley AVA is the largest wine region in the state of Washington, including over 11000000 acre , of which over 40,000 acre are planted in vineyards.  The Columbia Valley AVA includes 99% of the total vineyard area planted in the state of Washington.  Grapes grown here include Cabernet Sauvignon, Merlot, Chardonnay, Riesling, Syrah, Pinot gris, and Sauvignon blanc.  Concord grapes and other "Vitis labrusca" grapes are grown in the region as well.  The unique climates of the area allow the Columbia Valley to produce wines that are very fruit-forward, like California wine, but which also retain some of the balance and structure of European wine.
Answer: Texas County