Because Francis was assassinated by a serbian, Austria-Hungary declared war on Serbia, which triggered the domino effect of the central powers declaring war on everyone. Causing World War 1.
He caused ww1
In 1838, the city of Boston established the first American police force
I believe the answer is: 1500
The drama usually depict the lives of japanese people during the Muromachi or Tokigawa period. Even until today, noh drama is still considered to be a major theatre in japan, could be easily identified by the usage of conventional gestures and unique masks to separate different roles, such as ghosts, children. elderly, etc.
Not sure but i am going to guess construction, farming, and medical