What was an accomplishment by the Tang Dynasty of China?

The Tang rulers created the first paper currency in history.
The Tang rulers defeated Kublai Khan after a long war.
The Tang rulers expanded into the Mongol Empire.
The Tang rulers established a system of coinage.

Question

What was an accomplishment by the Tang Dynasty of China?

The Tang rulers created the first paper currency in history.
The Tang rulers defeated Kublai Khan after a long war.
The Tang rulers expanded into the Mongol Empire.
The Tang rulers established a system of coinage.

anonymous · Answer

can you narrow down the possible answers?

anonymous · Answer

Tang Dynasty benefit from the accomplishments of the Sui- was the completion of the Grand Canal which provided a vital route for trade between the northern cities & the southern rice-producing region of the Chang delta.

anonymous · Answer

i think that might help