Among the reform policies adopted by the Sui rulers was the equal fields system where land was subdivided almost equally among all members of society. Other policies concerned the improvement of agricultural activity to reduce the effects of famine, measures to reduce economic inequality, the regularization and reunification of the currency and changes in the government structure which encompassed certain departments and ministries. The Tang Dynasty succeeded the Sui Dynasty from 618 to 907. After a while in the Sui Dynasty, there was a rebellion among the people. As the rebellion grew in strength and scope, the region was once again faced with civil wars. The military leaders of the different provinces led their men to war to gain supremacy. The end of the civil war led to the birth of the Tang dynasty. The Duke of Tang became the first emperor of the Tang dynasty. The Tang dynasty, with a large population, managed to form a huge army. The dynasty's troops and rulers aimed to expand its territory to Asia. The dynasty also improved and developed new trade routes to improve the economic status of the region. Many kingdoms in the region paid homage to the court established by the Tang for various matters affecting their regions. The Tang dynasty was also able to conquer several regions and influence cultural changes in neighboring countries. The Tang dynasty was notably the period during which the country experienced the most development in various fields.