How did the NAACP have an impact on the military during World War I?

It was influential in winning the right of African Americans to serve as military officers in World War I. Six hundred African-American officers were commissioned and 700,000 men registered for the draft. The following year, the NAACP organized a nationwide protest, with marches in numerous cities, against D. W.

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explanation:

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.