This Is A Tough One,

what independent country has the ‘highest lowest point’?

before you start thinking it is not the highest point, so it is not Nepal or Tibet, it is the country whose lowest point is higher than any other country's lowest point, Nepal, for example, has 'southern lowland plains', to point you in the right direction the correct answer is a country which exists "entirely above 1,000m."  to be more precise: "Its lowest point of 1,400 metres (4,593 ft) is thus the highest in the world, over 80% of the country lies above 1,800 metres (5,906 ft)." so grab a coffee and start thinking, I did and was completely stumped, the correct answer is here and there is a good chance the country you picked was not even on the same continent!