Final answer:
The land empire including the Manchu in Central and East Asia was the Qing dynasty, established by the Manchu tribes after they conquered Beijing in 1644 and lasted until 1912.
Step-by-step explanation:
The land empire that included the Manchu in Central and East Asia was the Qing dynasty. The Qing dynasty was established by the Manchu tribes after they overran Beijing in 1644. It was the last imperial dynasty of China, ruling from 1644 until 1912.
The Manchu people came from northeastern Asia, close to the Great Wall in southern Manchuria, and were descendants of the Jurchen tribe. Under the leadership of Nurhaci and subsequently his son Hong Taiji, the Manchu state was formed and eventually conquered the entire territory of China, after Ming general Wu Sangui allowed the Manchu armies through the Great Wall.
During their rule, the Qing dynasty adopted many Chinese customs and administrative practices, although they proudly maintained their Manchu heritage. The integration of Chinese officials into the government was key to their control over the Chinese territory but Manchus retained their elite status and supervisory roles within the administration. The Manchu influence was evident in cultural aspects such as the required Manchu hairstyle and demonstrations of equestrian skills at the imperial court.