History
History (from Greek ἱστορία, historia, meaning "inquiry, knowledge acquired by investigation") is the study of the past as it is described in written documents. Events occurring before written record are considered prehistory. It is an umbrella term that relates to past events as well as the memory, discovery, collection, organization, presentation, and interpretation of information about these events. Scholars who write about history are called historians.
Mandarin Chinese
Mandarin ( ( listen); simplified Chinese: 官话; traditional Chinese: 官話; pinyin: Guānhuà; literally: "speech of officials") is a group of related varieties of Chinese spoken across most of northern and southwestern China. The group includes the Beijing dialect, the basis of Standard Mandarin or Standard Chinese. Because most Mandarin dialects are found in the north, the group is sometimes referred to as the Northern dialects (北方话; běifānghuà). Many local Mandarin varieties are not mutually intelligible. Nevertheless, Mandarin is often placed first in lists of languages by number of native speakers (with nearly a billion).