What international event contributed to the success of the Shuttle-Mir Program? A. The willingness of the US SUSSR to create bilateral agreements in the area of space
B. The pure distrust & rivalry between the US & USSR to outdo one another
C. The US publicly stating that the USSR had a superior space program to that of the US & the request for cooperation of once classified information
D. The USSR claiming full responsibility for the Cold War, opening the door to cooperation in areas that were once highly competitive