The answer is: The second was based on transportation improvements.
The second industrial revolution is marked by the creation of railroads and automobiles.
The first second industrial revolution marked by creation of machinery to produce large scale consumer products, while the second industrial revolution is initiated to enable the distribution process of those products.
Baesd one the description, i believe this illustrates the classical conditioning process known as: <span>spontaneous recovery
Spontaneous recovery refers to the recovery that only happened because of a delayed response after the first conditioning.
When Mariah first 'believe' that her fear of water is gone, it's only happen because there is no actual threat that she face during the swimming lesson, because it's guarded and safe.
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Rome's 200 year of peace and prosperity was called the Pax Romana.