Which is an effect of cultural diffusion along African gold-salt trade routes during the 8th and 9th centuries? A. The spread of gunpowder
B. The discovery of Atlantic monsoons
C. The invention of the printing press
D. The introduction of Islam

wwii

explanation:

the correct answer is ''the programs costs have risen dramatically in the recent past'' hope this !

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.