Complex sentence: The city's land has been altered substantially by human intervention, with considerable land reclamation along the waterfronts since Dutch colonial times; reclamation is most prominent in Lower Manhattan, with developments such as Battery Park City in the 1970s and 1980s.
Split into simpler sentences: The city's land has been altered substantially by human intervention, with considerable land reclamation along the waterfronts since Dutch colonial times. Reclamation is most prominent in Lower Manhattan, with developments such as Battery Park City in the 1970s and 1980s.