What economic changes occurred during European exploration? Choose four correct answers. Spain became the greatest naval power.
Trade shifted from the Mediterranean to the Atlantic.
European countries worked together to improve trade.
European countries became the wealthiest in the world.
Much of the Americas were claimed by European countries.
Trade increased and involved new goods and enslaved peoples.

c. the dred scott v. sandford case,

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.