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1. Borders Arkansas
Kansas
Nebraska
Both
Neither
2. Has a name that comes from a Native American word
Kansas: "people of the wind" Nebraska: "flat water"
Kansas
Nebraska
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3. Has a national park
Kansas
Nebraska
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4. Has a point of over 5,000 ft elevation
Panorama Point is 5,427 ft above sea level.
Kansas
Nebraska
Both
Neither
5. Has multiple cities with metro area population over 200,000
Omaha: 466,893 Lincoln: 284,736
Kansas
Nebraska
Both
Neither
6. Has voted Republican in every presidential election since 1968
The last time Kansas and Nebraska voted for different presidential candidates was 1908: Kansas went for Taft, while Nebraska voted for William Jennings Bryan.
Kansas
Nebraska
Both
Neither
7. Is in the first half of the states when listed alphabetically
Kansas is #16; Nebraska is #27
Kansas
Nebraska
Both
Neither
8. Is home to one of the ten richest people in the world (not counting royalty or dictators)
Warren Buffet (#3) lives in Omaha. Charles Koch (tied for #8) lives in Wichita.
Kansas
Nebraska
Both
Neither
9. Is home to the "board of education" in Brown v. Board of Education
Full name: Brown v. Board of Education of Topeka
Kansas
Nebraska
Neither
10. Is on historic U.S. Route 66 (from Chicago to Southern California)
Runs through the southeastern corner for 13.2 miles.
Kansas
Nebraska
Both
Neither
11. Is on the Missouri River
Kansas
Nebraska
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Neither
12. Is one of the 15 largest states in terms of area
At 82,278 square miles, Kansas is larger than Belarus.
Kansas
Nebraska
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13. Is one of the 15 smallest states in terms of population
Nebraska has a population of just under 2,000,000, which is less than the metro area population of Pittsburgh.
Kansas
Nebraska
Both
Neither
14. Is one of the top ten whitest U.S. states
Nebraska is #12; Kansas is #17.
Kansas
Nebraska
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Neither
15. Is one of the top two corn-producing states
Nebraska is #3; Kansas is #7. Iowa is #1.
Kansas
Nebraska
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Neither
16. Is the birthplace of a U.S. president
Gerald Ford was born in Omaha.
Kansas
Nebraska
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Neither
17. Is the location of the geographic center of the lower 48 states
It's in Lebanon, Kansas.
Kansas
Nebraska
Both
Neither
18. The state capital is the largest city
Kansas: Topeka vs. Wichita Nebraska: Lincoln vs. Omaha
Kansas
Nebraska
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19. Was completely contained within the Louisiana Purchase
Also true of Arkansas, Iowa, Missouri, and Oklahoma
True, but it's not a national park. Lots of things are part of the National Park System--national monuments, national historical parks, etc. Pretty sure every state has at least one.