The widespread substitution of steel for iron a. occurred ...

[KWilfred]

Question 1

The Sui Dynasty
 
  a. lasted from the ninth until the eleventh centuries.
  b. designated Daoism as the only official state ideology.
  c. completed the new Grand Canal system linking the Yellow the Yangtze river valleys.
  d. burned the literary works of Confucius and all non-Buddhists.
  e. moved the capital to Canton.

Question 2

The widespread substitution of steel for iron
 
  a. occurred early in the Industrial Revolution.
  b. was made possible by the use of hydroelectric power.
  c. happened after 1860 and prior to World War I.
  d. was limited to Europe until after World War I.
  e. occurred during World War I.

[jaygar71]

Answer 1

c

Answer 2

c

[KWilfred]

Excellent

[peter]

TYSM