Complex sentence: In March 1983, Mitterrand did a U-turn by cancelling the parts of "Programme commun" that had been already passed, which was sometimes referred to as the "austerity turn".
Split into simpler sentences: In March 1983, Mitterrand did a U-turn by cancelling the parts of "Programme commun" that had been already passed. This move was sometimes referred to as the "austerity turn".