One three letter word relating to anger and ending with O is ego.
Iceland is the country that has the word "anger" in it and ends with "land."
any
Aga
Gnu.
Three
* Auk * Elk * Yak
A three letter word that ends in the letter x could be the word Hex. A hex is a witches curse or spell.
dude, it's "you"
Arc
air
mar
bad