I'm not sure but extract is a synonym of abstract
Through the use of naval power
I think it is B, I hope it is help.
Answer:
Overview of the Tang Dynasty
The Tang dynasty (Chinese: 唐朝) was an imperial dynasty of China preceded by the Sui dynasty and followed by the Five Dynasties and Ten Kingdoms period. It is generally regarded as a high point in Chinese civilization and a golden age of cosmopolitan culture. Its territory, acquired through the military campaigns of its early rulers, rivaled that of the Han dynasty, and the Tang capital at Chang’an (present-day Xi’an) was the most populous city in the world.
With its large population base, the dynasty was able to raise professional and conscripted armies of hundreds of thousands of troops to contend with nomadic powers in dominating Inner Asia and the lucrative trade routes along the Silk Road. Various kingdoms and states paid tribute to the Tang court, and the Tang also conquered or subdued several regions that it indirectly controlled through a protectorate system. Besides political hegemony, the Tang also exerted a powerful cultural influence over neighboring states such as those in Korea, Japan, and Vietnam.
The Tang dynasty was largely a period of progress and stability in the first half of its rule, followed by the An Lushan Rebellion and the decline of central authority in the later half of the dynasty. Like the previous Sui dynasty, the Tang dynasty maintained a civil service system by recruiting scholar-officials through standardized examinations and recommendations to office. Chinese culture flourished and further matured during the Tang era; it is considered the greatest age for Chinese poetry. Two of China’s most famous poets, Li Bai and Du Fu, belonged to this age, as did many famous painters such as Han Gan, Zhang Xuan, and Zhou Fang. There were many notable innovations during the Tang, including the development of woodblock printing.
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