it the song and tang dynasties two different civilizations?

Yes, the Song and Tang Dynasties were two distinct civilizations within Chinese history. The Tang Dynasty, which ruled from 618 to 907 AD, is often referred to as a "golden age" of Chinese civilization, known for its advancements in art, literature, and technology. The Song Dynasty, which followed the Tang Dynasty and lasted from 960 to 1279 AD, also saw significant cultural and technological developments, particularly in the fields of science and governance. Though they were both periods of great prosperity and innovation, the Song and Tang Dynasties were ruled by different emperors and had distinct political and social structures.