Which reason for the decline of the Ghana Empire was the result of a natural disaster? New trade routes opened outside of Ghana. Rival armies and tribes invaded Ghana. A drought caused many farmers and other residents to leave. Individual states sought independence from the Empire.

it granted civil rights to african americans.

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.