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

they believed democracy was worth the fight

b. major john c. frémont led a rebellion called the bear flag revolt.

explanation:

during the bear flag revolt, from june to july 1846, a small group of american settlers in california rebelled against the mexican government and proclaimed california an independent republic. the republic was short-lived because soon after the bear flag was raised, the u.s. military began occupying california, which went on to join the union in 1850. the bear flag became the official state flag in 1911.

the gutenberg bible was and about 180 copies were sold/made

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