One-sixth of the worlds ground surface until 1991 in brief NYT crossword answer is:
USSR (4 letters length)The answer for One-sixth of the worlds ground surface until 1991 in brief crossword clue is listed above to help you solve the puzzle you are currently working on.
The clue "One-sixth of the world's ground surface until 1991" refers to the Soviet Union, which was the world's largest country until its dissolution in 1991. It covered an area of 22,402,200 square kilometers, making up one-sixth of the world's land surface. The Soviet Union was a superpower with a large population, and its dissolution had a major impact on the global political and economic landscape.