What condition during the Tang and Song dynasties most supported the flourishing of art and literature?

A period of peace and economic wealth

The division of China into small kingdoms

Strict laws limiting artistic expression

Artists of the Song dynasty were particularly famous for creating paintings that focused on what subject?

Portraits of emperors and officials

The beauty of the natural world

Busy life within the capital city

Large bronze statues of dragons

The construction of the Great Wall

The creation of the first printed books