who found it necessary to use secret police?\nivan iii\nivan iv\nthe mongols\nthe vikings

who found it necessary to use secret police?\nivan iii\nivan iv\nthe mongols\nthe vikings

who found it necessary to use secret police?\nivan iii\nivan iv\nthe mongols\nthe vikings

Answer

Brief Explanations:

Ivan IV (also known as Ivan the Terrible) established the Oprichnina, a secret police force, to suppress opposition and maintain control. Ivan III focused on unifying Russia, the Mongols had different governance methods, and the Vikings were raiders/settlers without such a secret police system.

Answer:

B. Ivan IV