It was constructed in 2500 B.C.
The correct answer for the given question above would be the third option. The Song Dynasty as compared to the Tang Dynasty is that, the Song Dynasty was smaller than the Tang Dynasty, but lasted for a slightly longer period of time. The Song Dynasty didn't expand much, whereas, the Tang Dynasty expanded to modern borders. Hope this answer helps.
Answer:
C. Created competition and other countries began to explore new lands
Answer: Forced collectivization of the remaining peasants, which was often fiercely resisted, resulted in a disastrous disruption of agricultural productivity and a catastrophic famine in 1932–33.
Explanation: hope i helped, tell me if u need more info! :)