All of the Following Were Technological Advances for Railroads Except

question 61

Multiple Choice

All of the following were technological advances for railroads except the

• A)move from iron to steel tracks.
• B)adoption of knuckle couplers
• C)use of automatic signals.
• D)introduction of air brakes.
• E)switch from the open-hearth to the Bessemer process in steel mills.

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Definitions:

Tax Return

A form filed with a government body to report income, expenses, and other relevant financial information, used to assess tax liability.

Diminishing Marginal Returns

A principle in economics where each additional unit of input results in a smaller increase in output after a certain point, common in production processes.