Perhaps the population grew when they started using chopsticks was because it was more hygienic. Assuming that people ate with they're hands before, think of how dirty it would be especially after a long day of hard work. The grim gets on their food, which enters their system, and before long, they fall ill.
Now, I suggest you fact check this because this is all based on my own assumptions. I'm not too familiar with the Zhou Dynasty, so please take what I say with a grain of salt. But I do hope this has nudged you in the right direction!
The answer is most likely taxation.
C. the territorial boundaries ignored different tribal, language and religious boundaries, creating internal tension.
Answer: would be A
Explanation: lols
The Articles of Confederation was the United States' first constitution. Proposed by the Continental Congress in 1777, it was not ratified until 1781. The Articles of Confederation created a national government composed of a Congress, which had the power to declare war, appoint military officers, sign treaties, make alliances, appoint foreign ambassadors, and manage relations with Indians.