Want to just put a quick apology in the comments again about my sniffling, I have rung up the doctors to try and sort it out because it's constant at the moment!
A good hint for the 4th round is that the only south american country that has red and white chevrons is ARG. So the country was free if you knew that. I thought the round looked a lot like Uruguay so I clicked near there.
you play very well! totally agree on not going by the meta for Latin America, if it is that flat then Uruguay and Argentina are the likeliest of bets. If it was more desert-y and flat, then southern Argentina near the coast I love how our rounds are usually the ones that throw off gringos lol