<span>In continental Middle America, climate and other
environmental conditions vary by altitudinal zone where Tierra fria rank 3rd
as the highest zone. Tierra nevada is the highest followed by Tierra helada,
Tierra fria, Tierra templada and Tierra caliente being the lowest.</span>
B. Fulton's Steam Engine
Explanation:
I believe it is B because there were steamboats and steam powered trains as a result.
The main idea is <span>Factory workers are degraded at work and at home on a daily basis.
The excerpts above describes the past situation where factories did not even provide necessary salary to sustain the living of their hard-working labors, but they never had a chance to change jobs because they couldn't find another opportunity.</span>
Answer: reindeer and muskox
Explanation: