What event prompted the merger of the US Freedom station concept and the Russian Mir-2 concept?

Answer

The ashes of the Cold War space rivalry

The fundamental commitment for the ISS arose from a partnership forged following the Cold War space rivalry, leading to the merger of the US and Russian station concepts in 1993.

What event prompted the merger of the US Freedom station concept and the Russian Mir-2 concept?
SpaceISSspace explorationInternational Cooperation