Censor means an official who watches others for correct behavior.
Currency is something such as coins or paper money, that is used as a medium of exchange.
Unify is to make into a single unit.
Civil servic is the administrative service of a government. e
Generations is a group of individuals born and living at the same time .
Tenant farmers is a farmer who works land owned by someone else and pays rent in cash or as a share of the crop.
Waterwheels is a wheel made to turn by the water flowering .
Acupuncture is oringinally a Chinese practice of inserting fine needles through the skin at specific point to treat dieasiese or relive pain.
Network is a connected group or system .
Link a connecting element or factor.