What factors contributed to the United States becoming a world leader? ОА.
the United States winning the war and having a strong economy
OB.
the Allies winning the war and US having a skilled labor force
OC.
the United States winning the war and German scientists sharing their knowledge
the United States suffering no war damage and having a strong economy
D.

they wanted the u.s. to fight on the side of the central powers.

lol   that was   funny : >

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.