In this case, there are so many undetectable countries that there would be little random variation, so you'll just have to zoom to spot the Caribbean nations.
I got super lucky after getting the seven easy ones as I was able to guess all three small Caribbean nations in three guesses, not one miss! so I finished with 7 seconds to go, phew
Lakes : Why are we here in the middle of the ocean
Me putting back Nicaragua and canada : well I see some lakes in the middle of the ocean