Which shuttle was responsible for flying the first assembly mission (STS-88) to connect the U.S. and Russian ISS modules?

Answer

Discovery

Discovery performed STS-88, which was a monumental task involving the initial connection of different international modules forming the core of the ISS.

Which shuttle was responsible for flying the first assembly mission (STS-88) to connect the U.S. and Russian ISS modules?
NASAMissionsSpace Shuttleflights