Share This Article 1. The Area-51 facility was established in 1955 to develop this aircraft. The U-2 The F-111 The F-117 The SR-71 2. On 7 April 1862 this Confederate stronghold on the Mississippi surrendered. Cairo, Illinois Island No. 10 Fort Donelson Vicksburg, Mississippi 3. This country’s general staff was the first to use the “staff ride” as a training exercise. Germany Austria Great Britain France Loading …
