Why was manor life during the early middle ages called self-sufficient

How can changes in technology or consumer demand make it difficult for people to get jobs? by changing the number or kind of jobs available by making it possible for some people to work fewer hours by making it difficult for people to buy what they want by creating a demand for things that are not available

What was included in most state constitutions that guaranteed protection of individual liberties based upon common law?

People are willing to pay more for a diamond than for a bottle of water because