What they said ...........
I would say b. precious stones Example of commodities that have been used as mediums of exchange include gold, silver, copper, salt, peppercorns, tea, large stones (such as Rai stones), decorated belts, shells, alcohol, cigarettes, cannabis, candy, cocoa beans, cowries and barley.
Answer:
China conquered the Mongolian State in 1919.
In a letter Pope Gregory said to take things slow.
Intergrate their rituals as Christian rituals.
(Halloween today.)
