History, 23.11.2019 21:31 Destinysills9325
Problem 1: an invention by carl siemens make the second industrial revolution possible. what was it?
a. an expanded system of telephones
b. insulation for telegraph wires
c. a way to make large quantities of steel in a gas furnace
d. medication from coal tar
problem 2: which of the following became common in middle-class homes during the second industrial revolution?
a. televisions
b. electric lamps
c. stereos
d. electric typewriters
Answers: 2
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