Suppose you are a Central Asian nomad.During your travels,you and your family trade two small goats to a farmer in return for a large supply of grain.You are wondering how you can carry the heavy sacks,since the horses are already overloaded.Watching your daughter playing with a small cart that moves on two little wheels made from dried roots,you suddenly jump up and shout the Central Asian equivalent of "Eureka!" Within several days,you and your family have made a crude two-wheeled cart that can be pulled by a horse.What is your wheeled cart is an example of?

Question

Quizplus · Accepted Answer

The invention of the two-wheeled cart is an example of secondary innovation, which is the modification or improvement of an existing technology or practice. The use of two wheels instead of none or one is a modification of existing wheeled technology.

Suppose You Are a Central Asian Nomad