Answer:
The answer to your question is Espionage was used during the 13th and 14th centuries.
Step-by-step explanation:
Spies were also prevalent in the Greek and Roman empires. During the 13th and 14th centuries, the Mongols relied heavily on espionage in their conquests in Asia and Europe. Feudal Japan often used shinobi to gather intelligence.
I hope this helps and have a wonderful day!