When was the tang dynasty?
What is 618-907.
When was gunpowder found?
What is the tang dynasty.
What was paper made of?
What is rags, bamboo, hemp, and mulberry bark.
Qin shi Huangdi unified _______.
What is china.
Who is confucianisms founder?
What is confucius.
How many years did imperial china span over?
What is 2,000 years.
Paper making was developed during ______.
Where was Qin shin huang, China ยด s first emperor, buried?
What is in a tomb, containing rivers of flowing mercury to simulate his empire.
The compass was developed from _______. During the _______.
What is si san, and the warring states to song dynasty.
What did the han dynasty use to create toxic fumes against enemies?
What is arsenic-based smoke bombs.