Which dynasty's collapse in 220 CE led to a divided China for nearly 400 years?

The collapse of the Han Dynasty in 220 CE is significant because it marked the end of a centralized imperial authority in China and ushered in a period known as the Three Kingdoms, which led to fragmentation and division. This era of division lasted for almost 400 years and was characterized by a lack of unified government, with multiple states vying for power and territory.

The Han Dynasty was a pivotal time in Chinese history, noted for its development of trade, culture, and advancements in technology. When it fell, it led to socio-political chaos and the rise of warlords, making the Han's collapse a defining moment that strayed from the unity that had been established. This period significantly shaped the future of China, influencing its political landscape, culture, and even views on governance that would last for centuries.

In contrast, the Qin Dynasty, while influential, fell shortly after its rise and did not lead to such an extensive period of division. The Tang and Sui Dynasties occurred much later and were notable for their reunification efforts and contributions to Chinese culture and governance, rather than leading to extended fragmentation. Thus, the Han Dynasty's fall and the consequences that followed are critical to understanding the historical trajectory of China during this era.