Question

The reformation was a 12th century AD movement.​

Answer 1

Explanation:

The twelfth century—or more accurately the period between about 1070 and 1160—was a watershed in the history of Western Europe. ... N o w Giles Constable applies the term 'reformation' to the profound religious change which was one of the most significant characteristics of the twelfth century

Answer 2

The Reformation was the start of Protestantism and the split of the Western Church into Protestantism and what is now the Roman Catholic Church. It is also considered one of the events that signify the end of the Middle Ages and beginning of Early modern period in Europe.