Provinces of the Persian Empire with a Map

Which modern-day countries have territory that was ever part of the Ottoman Empire or its vassal states?

Name all the modern-day countries of the Achaemenid Empire at around 475 BC, also known as the First Persian Empire!

Can you guess the modern-day countries whose territory was occupied by Japanese troops during WWII?

There are 16 countries with a population of at least 100 million. Click them all without clicking any incorrect countries.