How did he get the name caligula and what does it mean?

After Gaius (Caligula's real name) went with his father on campaigns in north Germania, the other soldiers were surprised that Gaius was dressed in a miniature soldier's uniform, including boots and armor. He was then given the nickname Caligula, which means, "little soldier's boot" because he wore the little boots with his uniform, hope this helps

Use the formula: (n-2)×180, where n is the number of sides(18-2)×180= 28800, now this is the full exterior angle of 18-gon so you divide it by 18.28800÷18=160

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.