Complex sentence: In 1869 an initiative was undertaken to channelize the Menomonee River and build a series of ship canals, among which Holtons Canal, the South Menomonee Canal and Burnham Canal and are still in use today.
Split into simpler sentences: In 1869 an initiative was undertaken to channelize the Menomonee River and build a series of ship canals. These were named Holtons Canal, the South Menomonee Canal and Burnham Canal and are still in use today.