I have a test where I am given the following article, what is an answer for the question: In addition to West Virginia, in what state did Trump win all counties in the 2016 election? ?

Oklahoma has been politically conservative for much of its history, especially recently. During the first half-century of statehood, it was considered a Democratic stronghold, being carried by the Republican Party in only two presidential elections (1920 and 1928). During this time, it was also carried by every winning Democratic candidate up to Harry Truman. However, Oklahoma Democrats were generally considered to be more conservative than Democrats in other states.
After the 1948 election, the state turned firmly Republican. Although registered Republicans were a minority in the state until 2015, starting in 1952, Oklahoma has been carried by Republican presidential candidates in all but one election (1964). This is not to say every election has been a landslide for Republicans: Jimmy Carter lost the state by less than 1.5% in 1976, while Michael Dukakis and Bill Clinton both won 40% or more of the state's popular vote in 1988 and 1996 respectively. Al Gore in 2000, though, was the last Democrat to even win any counties in the state. Oklahoma was one of three states, the others being Utah and West Virginia, where Barack Obama failed to carry any of its counties in 2012, and it was the only state where Barack Obama failed to carry any county in 2008. In 2016, Donald Trump, the Republican nominee, again won every county, being one of only two states, the other being West Virginia, where Democrat Hillary Clinton failed to carry a single county.
Generally, Republicans are strongest in the suburbs of Oklahoma City and Tulsa, as well as the Panhandle. Democrats are strongest in the eastern part of the state and Little Dixie, as well as the most heavily African American and inner parts of Oklahoma City and Tulsa. With a population of 8.6% Native American in the state, it is also worth noting most Native American precincts vote Democratic in margins exceeded only by African Americans.Following the 2000 census, the Oklahoma delegation to the U.S. House of Representatives was reduced from six to five representatives,...

Oklahoma