6. Australia, Singapore, Greece – can visit 167 countries
Australia is an Oceania country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands.
The country is the world sixth-largest country by total area and one of the wealthiest in the world.
Singapore is a modern city-state and island country in Southeast Asia, which lies off the southern tip of the Malay Peninsula. As of 2015, Singapore is the richest country in the world.
These three countries are ranked 6th because their citizens can visit 167 countries without visa.
Their main product exports are wheat and wool, electronic materials and olive oil for Greece.
