I found the lowest by doing an AI search on Duck Duck Go. You can do a Google seatch for “Average IQ by Country”. Some sites don’t give believable numbers to me...showing almost no countries below 90.
Pals of mine who used to go train the Saudi military called them the “Double Nickles” because they claimed that the Saudi mean IQ was 55. (I find that to be shockingly low to the point of unbelievable! An IQ that low you’re basically a bipedal asparagus!) One of the said even the officers were equally intellectually bad! All my pals said what do you expect from 1000s of years of inbreeding. My only experience with that was when I was overseas working with some Pakis - a patience tasking experience. One of them had just got married and was “bragging” that his uncle had saved a bride for him. He showed us a picture and it was clear from the pic as we say back in the hills -”She just ain’t right!”. 1000s of years of inbreeding in a nutshell.