Answer:
They also invented a flute, a drum, the famous Inca panpipe (a collection of hollow tubes of various lengths stuck together),
Explanation:
In nonrelativistic classical mechanics, a closed system is a physical system that doesn't exchange any matter with its surroundings, and isn't subject to any force whose source is external to the system. A closed system in classical mechanics would be considered an isolated system in thermodynamics.
Answer: More people will lose their jobs to machines, however, there will be less loss of human life.
By boat, or plane, or other means of transportation.