Answer:
Among the earliest inventions were the abacus, the sundial, and the Kongming lantern. The Four Great Inventions,the compass, gunpowder, papermaking, and printing – were among the most important technological advances, only known to Europe by the end of the Middle Ages 1000 years later.
Explanation:
The supply curve demonstrates the relationship between a good's price and the quantity producers are willing and able to supply. The upward sloping line demonstrates this direct relationship: as the price rises, the quantity supplied increases; as price decreases, quantity supplied decreases.
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Answer:
it's A...................
It's kinda like an educated guess.
