4 ms·

Why the question mark? Because you don't know. They led in this research.

• lost_tourist 4y ago
  No they didn't. Europe and the USA have always led the way in this area.
  • midislack 4y ago
    I'm afraid you're simply uninformed here. USSR was the leader.
    • lost_tourist 4y ago
      I don't think so, 99% of the time I'm correct.
      • midislack 4y ago
        See you back on 4chan!