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By 1866, the city of Portland had grown into a complex system of streets. The new streets are too numerous to count easily.
The most important addition is Commercial Street, which extended the waterfront. As the name suggests, it was built to meet the needs of the city's growing economy.
The railroads and ferry lines depicted on the map are also signs of Portland's growth. These new forms of transportation connected Portland to other cities and towns both near and far.
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