What is the cause and effect of song and tang dynasty

Answer

The Song dynasty (960-1279) follows the Tang (618-906) and the two together constitute what is often called "China's Golden Age." The use of paper money, the introduction of tea drinking, and the inventions of gunpowder, the compass, and printing all occur under the Song.

The Song Dynasty as compared to the Tang Dynasty is that, the Song Dynasty was smaller than the Tang Dynasty, but lasted for a slightly longer period of time. The Song Dynasty didn't expand much, whereas, the Tang Dynasty expanded to modern borders.

the first forms of writing came from them in the form of pictographs around 3100 bc.