Question

which best describes the impact of railroad expansion on the steel industry?
○ it did not affect the demand for steel at all.
○ it decreased the demand for steel since railroad tracks were build from wood.
○ it increased the demand for steel since steel was used to make railcars and tracks.
○ it decreased the demand for steel since the railroad was generally not used to transport steel.

Explanation:

To determine the impact of railroad expansion on the steel industry, we analyze each option:

• The first option is incorrect because railroad expansion would logically impact steel demand.
• The second option is wrong as railroad tracks (and railcars) were made of steel, not wood.
• The third option is correct: Railroad expansion required steel for railcars and tracks, so it increased the demand for steel.
• The fourth option is incorrect because the railroad's use for transporting steel is not relevant to the demand created by building railroads (which need steel for infrastructure).

Answer:

C. It increased the demand for steel since steel was used to make railcars and tracks. (Note: Assuming the options are labeled A, B, C, D with the third option being C as per typical multiple - choice formatting. If the original options had different labels, adjust the label accordingly while keeping the text of the option.)