Complex sentence: She was instrumental in the eventual cancellation of the Lower Manhattan Expressway, and ater moving to Canada in 1968, equally influential in canceling the Spadina Expressway and the associated network of highways under construction.
Split into simpler sentences: She was instrumental in the eventual cancellation of the Lower Manhattan Expressway. After moving to Canada in 1968, equally influential in canceling the Spadina Expressway and the associated network of highways under construction.