Which of these led to expanded trade between East Africa and East Asia?
A) creation of junk ships
B) invention of the compass
C) invention of "arabic" numerals
D) greater knowledge of monsoon winds

did you check the study guide?

the deaths of over a million communist soldiers

post-traumatic stress disorder in veterans

polticians and sentates thought to annoucne the fialre of articles of confedartion by making a centralized nation as a hole

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.