Qin (state)Qin () was an ancient Chinese state during the Zhou dynasty. Traditionally dated to 897 BC, it took its origin in a reconquest of western lands previously lost to the Rong; its position at the western edge of Chinese civilization permitted expansion and development that was unavailable to its rivals in the North China Plain. Following extensive "Legalist" reform in the fourth century BC, Qin emerged as one of the dominant powers of the Seven Warring States and unified the seven states of China in 221 BC under Qin Shi Huang.
Xia dynastyThe Xia dynasty () is the first dynasty in traditional Chinese historiography. According to tradition, the Xia dynasty was established by the legendary Yu the Great, after Shun, the last of the Five Emperors, gave the throne to him. In traditional historiography, the Xia was later succeeded by the Shang dynasty. There are no contemporaneous records of the Xia, who are not mentioned in the oldest Chinese texts, since the earliest oracle bone inscriptions date from the late Shang period (13th century BC).
Warring States periodThe Warring States period () was an era in ancient Chinese history characterized by warfare, as well as bureaucratic and military reforms and consolidation. It followed the Spring and Autumn period and concluded with the Qin wars of conquest that saw the annexation of all other contender states, which ultimately led to the Qin state's victory in 221 BC as the first unified Chinese empire, under the Qin dynasty. Although different scholars point toward different dates ranging from 481 BC to 403 BC as the true beginning of the Warring States, Sima Qian's choice of 475 BC is the most often cited.
Spring and Autumn periodThe Spring and Autumn period was a period in Chinese history from approximately 770 to 481 BCE (or later) which corresponds roughly to the first half of the Eastern Zhou period. The period's name derives from the Spring and Autumn Annals, a chronicle of the state of Lu between 722 and 481 BCE, which tradition associates with Confucius (551–479 BCE). During this period, royal control over the various local polities eroded as regional lords increasingly exercised political autonomy, negotiating their own alliances, waging wars amongst themselves, up to defying the king's court in Luoyi.
Chinese nobilityThe nobility of China represented the upper strata of aristocracy in premodern China, acting as the ruling class until 1000 , and remaining a significant feature of the traditional social structure until the end of the imperial period. The concepts of hereditary sovereignty, peerage titles, and noble families existed as early as the semi-mythical and early historical periods, but the systems of enfeoffment and establishment only developed in the Zhou dynasty, by the end of which a clear delineation of ranks had emerged.
Zhou dynastyThe Zhou dynasty ( zhou1; Old Chinese (B&S): *tiw) was a royal dynasty of China (1046 BC – 256 BC) that followed the Shang dynasty. Having lasted 789 years, the Zhou dynasty was the longest dynastic regime in Chinese history. The military control of ancient China by the royal house, surnamed Ji, lasted from 1046 until 771 BC for a period known as the Western Zhou, and the political sphere of influence it created continued well into the Eastern Zhou period for another 500 years.
