Which problems did you include in your answer?
1. Samuel Morse invented the .2. A little more than thirty years after it was invented, the was rapidly replaced by the . 3. Today’s telephone uses the same basic that were used in 1876.
How did new methods of rail transportation help people commute in cities?
Look at these three pictures. Each one represents a modern version of Edison’s original idea. Select the Edison invention that matches each picture.

Which of the following changes did you address in your answer?
How did automobiles affect Americans’ ability to get from place to place?
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