When was the us construction written

September 17, 1787.

This was the same place the Declaration of Independence was signed. The Constitution was written during the Philadelphia Convention—now known as the Constitutional Convention—which convened from May 25 to September 17, 1787. It was signed on September 17, 1787.

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.