chronology

the study of time and when things happened

BC

before christ

AD

after death

primary source

something that tells us about the past and is from the time period that we want to know about.

secondary source

something that tells us about the past but has been made after the time period that we want to know about

the fuedal system

how society was organised in the medival period

domesday

day of judgement

crusade

a military campaign from the christian west to the middle east to relate the holy land of jerusalem

pilgrimage

a religious journey to a holy place

symptom

something that shows up when someone is suffering from an illness

change

something different

continuity

something is the same