Which statement correctly describes the Tang Dynasty?

The dynasty was the first to establish civil service exams in China to identify the best workers for government positions.
The dynasty created a vast empire that stretched from the East China Sea westward across China.
The dynasty encouraged the growth of artisans in different fields to produce works that inspired a Golden Age of culture for China.
The dynasty ended by the invasion and takeover of Kublai Khan and the Mongol Dynasty.