Briefly explain how ONE specific historical event or development in the period 1919–1930 that is not explicitly mentioned in the excerpts could be used to support Leuchtenburg’s interpretation.

a is the final : )

answer: in 1900, there were no "workplace safety laws"!

explanation: at the beginning of this century, workers in the united states faced remarkably high health and safety risks on the job.

a century ago in 1900 about three hundred out of every one hundred thousand miners were killed on the job each year.

[industria] developments occurred within a legal and regulatory climate that diminished employer’s interest in safety. as a result, americans developed production methods that were both highly productive and often very dangerous.

an explanatory essay explains something and an argumentative essay argues for or against something. hope this : )