What achievement helped the Shang Dynasty create a strong army?

What achievement helped the Shang Dynasty communicate and run the government?

What achievement did the Qin Dynasty use to keep out invaders and make itself look strong?

How did standardization help the Qin Dynasty run its government better?

What achievement did the Han Dynasty use to trade inside China and with Mesopotamia and Europe?

What achievement did the Han Dynasty use to tell time, which made it easier to organize the government?

What Han Dynasty achievement let boats go further to explore and trade without getting lost?

What achievement might have been invented during the Han Dynasty that would help make more powerful weapons?

What is the definition of "characters"?

How did Shi Huangdi "standardize" things in his empire?