Complex sentence: He later aligned politically himself with Simard, who was a minister in the governments of Lucien Bouchard and Bernard Landry; in 2001, Simard announced that Gauthier would work with him on issues relating to regional development and Quebec sovereignty.
Split into simpler sentences: He later aligned politically himself with Simard, who was a minister in the governments of Lucien Bouchard and Bernard Landry. In 2001, Simard announced that Gauthier would work with him on issues relating to regional development and Quebec sovereignty.