What was an achievement which helped contribute to the downfall of the Zhou
One achievement that contributed to the downfall of the Zhou Dynasty was the emergence of powerful regional states during the Spring and Autumn Period (771-476 BC). This was a time of political fragmentation and instability, as numerous feudal states gained significant autonomy and power, weakening the central authority of the Zhou Dynasty.
The Zhou Dynasty's system of feudalism, which relied on the loyalty and cooperation of regional lords, started to break down. The regional states became increasingly independent and engaged in power struggles among themselves. This weakened the central government's control over the country, making it difficult for the Zhou Dynasty to maintain its authority and cohesion.
As a result, the Zhou Dynasty gradually lost its control over its vassal states, and the central government became increasingly powerless. The rise of regional states and the erosion of central authority paved the way for the eventual collapse of the Zhou Dynasty and the subsequent Warring States Period (475-221 BC).