What did martin luther do in response to the church selling indulgences?

He wrote a paper to attack to the Church even going as far as calling them corrupt for their actions.

Explanation:

im pretty sure his paper was called '95 Theses to the door of All Saints'. The church also responded to this paper,  Pope Leo X calling him a hieratic

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.