How did the economy of China change during the zhou empire?

China's economy contracted as nomads from the north raided villages and threatened cities
China's economy expanded as Farmers using iron tools were able to grow more food
China's economy stalled as battles among warlords disrupted planting and destroyed crops
China's economy was threatened by Huang river floods resulting in widespread famine

China's economy expanded as Farmers using iron tools were able to grow more food

During the Zhou Empire, the economy of China experienced different changes. Let's go through each option one by one to identify the correct answer:

1. China's economy contracted as nomads from the north raided villages and threatened cities: This statement suggests that the economy shrunk due to nomadic invasions. While invasions did occur during this period, they did not have a significant impact on the overall economy. Therefore, this option is not correct.

2. China's economy expanded as farmers using iron tools were able to grow more food: This statement suggests that the use of iron tools by farmers led to increased food production, resulting in economic growth. During the Zhou Dynasty, agricultural productivity did improve as iron tools were developed and used more extensively. This led to an expansion of the economy, making this option a plausible answer.

3. China's economy stalled as battles among warlords disrupted planting and destroyed crops: This statement indicates that battles among warlords negatively affected agriculture and resulted in a stagnant economy. While there were conflicts and power struggles during the later period of the Zhou Dynasty, they were not substantial enough to completely stall the economy. Therefore, this option is not correct.

4. China's economy was threatened by Huang river floods resulting in widespread famine: This statement claims that widespread flooding and famine posed a threat to the economy. Huang River (or Yellow River) floods did occur during this time, causing significant damage to agriculture and leading to famines. These events did have a considerable impact on the economy and the overall stability of the Zhou Empire, making this option a plausible answer.

Based on the analysis, the correct answer is:
- China's economy expanded as farmers using iron tools were able to grow more food,
- China's economy was threatened by Huang river floods resulting in widespread famine.