Explain ONE demographic or environmental effect of the Columbian Exchange on Africa. for ap world history use IDC (identify describe explain)

just like you man, i personally think its either c or d

explanation:

but good luck with the test man

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.