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.
Every decade or so, the world is tested by a crisis so grave that it breaks the mould: one so horrific and inhumane that the response of politicians to it becomes emblematic of their generation —their moral leadership or cowardice, their resolution or incompetence. It is how history judges us.
Jo Cox, Don’t leave Syria to become a graveyard — this generation’s responsibility to the world (13 October 2015)