Ill make which of the following is not true about the invention of the compass?
a. it allowed the chinese to easily find their way home
b. it caused the chinese to trade iron to be used in the compass
c. it was invented earlier but its first recorded use was during the qin dynasty
d. it provided information on the location of the north pole

Yes, some people used the depression to the max. not everybody had stocks, and those that didn't bought many things inexpensive, so that when prices rose again, they were much more richer than beforehope this

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