Did you realize that there are 21 states whose names end in the letter a?

I saw this mentioned as part of a puzzle in a magazine. It seems a bit surprising, given that there are not that many words in English that end with an a. Part of the reason is that some states were named by Spanish explorers, like Florida and California. Lots of Spanish words end in a.

I found this link giving the name origin of every state. Check out the origin of Idaho. A number of state names come from Native American phrases or tribe names, which may help to explain all the a’s.

The puzzle in the magazine asked which letter comes next after a. There are only 5 occurrences. What letter would you guess? It does not help that there are 3 other letters that come at the end of the names of 4 states.