A social contract is an agreement between <u>the ruled and their rulers or the government and the people.</u>
In political philosophy the concept of the social contract was first fully developed by the English philosopher Thomas Hobbes in his book named "Leviathan: The Matter, Form, and Power of a Commonwealth, Ecclesiastical and Civil" (1651).
The author defined a social contract as an agreement between the ruled and their rulers, in which all individuals in a society cede their natural rights (life, liberty, property, etc.) to an absolute government, even meaning that individuals would have to accept abuses of power. Through the contract people could live better and maintain peace, receive protection and avoid conflict by the establishment of a civil society.
The answer is iron. The Hittites learned to smelt and work with the element before any other civilization.
I do believe the early Egyptians, being as smart as they where used a interesting method of a sundial. It caught the suns shadow and they where able to use it to tell the time.
Silversmiths, glassmakers, and weavers are examples of ARTISANS. These are people in the skilled trade crafting things by hand. Artisans are very important during the colonial era because developments and technology came from them. They invented their own tools, mastered their use and made further improvements to make them the best. These artisans are in charge of helping the community by being the reliable source for tools and other trade items essential for the economy.
I believe it's candidates :)