Answer:
The answer is Greece.
Step-by-step explanation:
Classical era. Many Greek mercenaries fought for the Persian Empire during the early classic era. For example: Xerxes I, king of Persia, who invaded Greece in 484 BC employed Greek mercenaries.Recent years have seen major mercenary activity in Yemen, Nigeria, Ukraine, Syria, and Iraq. Many of these for-profit warriors outclass local militaries, and a few can even stand up to America's most elite forces, as the battle in Syria shows.
Hope this helps!!
Happy Holidays and Season Greetings!!