New York (state) that connected New York City to the Great Lakes, by the Hudson River, the new canal, and the rivers and lakes. Work commenced in 1817, and the Erie Canal opened in 1825. Packet boats pulled by horses on tow paths traveled slowly over the canal carrying passengers and freight. Farm products came in from the Midwest, and finished manufactured goods moved west. It was an engineering marvel which opened up vast areas of New York to commerce and settlement. It enabled Great Lakes port cities such as Buffalo and Rochester to grow and prosper. It also connected the burgeoning agricultural
Griebnitzsee of lakes towards the Großer Wannsee. The remaining water flows through the Griebnitzsee to its western end, where it flows into the River Havel near Potsdam. The length of the Griebnitzsee is navigable, and forms part of the Teltow Canal route that links the River Havel with the River Spree and the Oder-Spree Canal, bypassing the reach of the River Spree through central Berlin. The navigable Griebnitz Canal provides an alternative link from the Griebnitzsee to the River Havel via the Großer Wannsee. During the time of the Berlin Wall, the border between Berlin and East Germany ran down the