Answer:
Goods and services are what they raise demand for.
Tariffs were used in the industrial revolution
Neolithic Farmers invented a primal form of what we would know today as a type of scythe or sickle.
Hope this helps!
Answer: Hypothesis.
A hypothesis is a proposed, testable explanation for a phenomenon. It is meant to serve as the initial point for further investigation.
In this case, the phenomenon Ciara has observed is that some women are happier than others. Her proposed explanation is that women who have some work experience are happier than those who do not. This is going to be the starting point of her research.