The system of numerals developed during the Gupta Empire a. was too difficult for other cultures to understand.
b. spread at the time of the empire, but it didn’t last.
c. became the numerals we use today.
d. is only used by Arab countries now.

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The embargo act of 1807  was a law passed by the united state congress and signed by president thomas jefferson on december 22,  1807. it prohibited american ships from trading in all foreign ports. in 1806, france passed a law that prohibited trade between neutral parties, like the u.s., and britain.