Answer:
D. His improvements allowed the steam engine to run more efficiently on oil instead of coal.
2nd, lands in the middle east
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 Confederation Congress unable to control inflation because they could not regulate prices.
