When did the following event happen?
John Campbell invents the sextant to enable sailors to measure the angle between an astronomical object and the horizon for the purposes of celestial navigation.
Select a space in the timeline below.
1215
The Magna Carta is signed by King John at Runnymede, founding the modern concept of constitutional rule.
Note:
BCE means that the date is the number of years before the current era (CE/AD).
c. is short for 'circa' and indicates that the date is considered approximate.