True, because as time goes on, cultures mix and evolve according to what resources are available.
Answer:
I believe it is the first one. How should people pay for goods and services
Democracy originated in greece from the idea of the demos, which literally means: mob
Greek democracy was established because of the idea that a person shouldn't be too powerful and rule the lives of others. They were so ruthless at it that they would choose people to rule and then if they became too powerful and popular they would exile them or punish them or similar things.
It was a kind of mob mentality that supported new and popular people. It was not very democratic however according to modern understanding of democracy because many were not allowed to vote at all, including slaves who existed as an entire social class.
Learn about democracy;
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Answer:
Mechanical energy usually means the sum of the kinetic energy and potential energy. So when you ride your bike you hope that the muscular (chemical) energy is converted mainly into mechanical energy. Unfortunately friction will produce heat and sound and will reduce the amount of mechanical energy that you have.
