You think you know you country than any other person? Here’s a short quiz to test your knowledge about USA. [WATU 2] Loading…
#3.The Tsar Bomba, October 30, 1961 The Soviets’ AN602 a three stage Teller–Ulam design hydrogen bomb with a yield of 57 megatons was the most powerful nuclear weapon ever detonated. Loading…
#3.Underwater Welders. Loading…