History

The study of the past as it is recorded by humans.

Chronology

age of metals 1200bce - 600bce

a sequence of related events historical events shown in chronological order

Common Era

an abbreviation of the Latin Anno Domini-" in the year of our lord" after the birth of christ

Before Christ

the period of history before written records

an abbreviation of Before the Common Era, a term used before the birth of Christ

a block of time in history