How Did Louisiana Get Its Name?

Ever since my sidetrip in November, 2014, I had wanted to return to the town of Louisiana, Missouri. It was deemed Historic by one of the brown, Historical markers on Hwy 61, which is also called the "Avenue of the Saints." I suppose I was intrigued by the name. Why is a town, in one state, named for another state? We left our Cozy C campground on Hwy 54 with the address of Bowling Green, and headed east to Louisiana. I assured Mike that he just "had" to see this quaint little town, on the banks of the Mississippi. We stopped at a Convenience Store and upon asking the young 18-19 year old clerk (why did I think he would know?) "How did Louisiana get it's name?" His reply was, "I don't know, but many years ago we had lots of people coming here because "Bigfoot" was sighted." Bigfoot? Really? So, to Google I went. And yes, in 1971-1972 there was a sighting of a "Bigfoot-like-creature." It apparently was one of ...