Answer:
By making changes in the inventions that makes life easier.
Explanation:
innovation has greatly impacted the life of the inhabitants and later periods in history because with the help of innovation, the instruments were made more advanced which make the work easier and the people can get benefit from it and their life was completely changed with this innovations. For example, in ancient times, people made floor by crushing seeds with an small machine but with the help of innovation, a wind mill was formed and more grains was grinded to make floor.
Because it was built on sand and some of it sunk, and changed due to erosion and weathering of the land
The answer is: Pre operational stages.
According to piaget's theory, children will started to recognize and learn to manipulate symbols during pre operational stages.
They will start to understand hand gestures, facial expression, and voice intonation that given by other people.
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Normal pregnancies last for about 37 weeks, that is the estimated date of confinement.
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