History, is the study of human civilisations that existed in the past.
A civilisation is a human society that exists in particular time and place, with complex organisation which includes politial, economic, social and cultural elements.
CHRONOLOGY AND GEOGRAPHYCAL LOCATION
The chronology refers to the location in time, shown in years, decades, centuries or historical periods. A timeline is a graphic representation of chronology. Historians use the birth of Christ as point of reference.
Years before Christ's birth are indicated by the letters B.C.
Years after Christ are indicated with the letters A.D. (Anno Domini)
What is history?
Look at the following video and try to understand the differences between primary and secondary sources.
