Complex sentence: Among his other investments, Trudeau had interests in mining companies and was the largest shareholder and member of the Board of Directors of the Montreal Royals baseball team, and was the team's vice-president at the time of his death.
Split into simpler sentences: Among his other investments, Trudeau had interests in mining companies. He was also a noted baseball enthusiast; the largest shareholder and member of the Board of Directors of the Montreal Royals baseball team, and was the team's vice-president at the time of his death.