The Tang Dynasty was founded by Emperor Gaozu and lasted from 618-907 AD. The Tang Dynasty was considered a golden age for China with significant growth in arts, literature, and technology. Buddhism spread throughout the Tang Dynasty and became the most prominent religion. An underlying factor to the prosperity of the early Tang Dynasty was the creation of a strong centralized bureaucracy with efficient policies. Organized into Three Departments and Six Ministries separated to draft review and implement policies. Tangs prosperity was significant allowing its capital city to become the largest in the world at that time. Although from 860 onward the Tang dynasty began to decline from a series of inner rebellions.