I'm another person from Kansas, the other Kansas anon was right. The state was named after the Kansa (kan-SAW) tribe. Their name translates to People of the South Wind. Apparently the reason Arkansas is pronounced differently is because the "saw" sound was how the French pronounced the plural version and the "sus" sound in Kansas was the singular pronounciation. So basically blame the French. Sorry if I confused you, just wanted to give some more depth.