Answer:

uniting

AnswerCrossword Clue
UNITINGActing in concert
UNITINGWedding
UNITINGJoining.
UNITINGBanding together.
UNITINGMerging.
UNITINGCoalescing.
UNITINGBringing together.
UNITINGIntegrating
UNITINGJoining forces
UNITINGJoining
UNITINGLinking up
UNITINGBringing together