Generally speaking, it was "weapons" that was not something that the British wanted to get from the Chinese, since these were easily made in Great Britain so there was no need to import them.
Answers A and D I am pretty sure but don't trust me.
Answer:
A - It shows the boundaries of the countries in Europe.
Answer: The Song Dynasty had a large reliance on the scholar gentry class, while the Tang had very little reliance on it. The Song Dynasty didn't expand much while the Tang expanded to practically modern borders. The Tang Dynasty and the Song Dynasty both lasted about 300 years
Explanation: i dont know if that is right