Front

Source recorded by a first-hand witness

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Primary Source

Front

Source written after an event by someone not involved

Back

Secondary Source

Front

Prejudice or unfair opinion toward a group or person, regardless of evidence

Back

Bias

Front

Researcher excavating historical ruins and artifacts

Back

Archaeologist

Front

In the Gregorian Calendar, refers to time since Christ's birth, also known as Common Era (CE).

Back

Anno Domini

Front

In the Gregorian Calendar, the time before Christ counts backwards from 1 B.C. and is also known as Before Common Era (BCE).

Back

Before Christ

Front

In the Gregorian Calendar, a secular term for time since Christ's birth, often used by historians.

Back

Common Era

Front

In the Gregorian Calendar, the term for time before Christ, counting backwards from 1, often used by historians.

Back

Before Common Era

Front

Prolonged armed conflict between groups or states

Back

War

Front

Area with a population ruled by an organized government

Back

State