The most powerful country ever would have to be Britain from the middle of the previous millennium to the turn of the 20th century. It's empire was the largest ever to exist on the face of the Earth. Many, most American, people try to claim that the USA is the most powerful nation ever but when you compare the two Nations, there is no comparison. The USA has the potential to blow up a few countries, whereas Britain actually owned 1/3 of the world, in terms of population.
At the moment the most powerful country is America,the 3'rd most powerful country is Russia.
The most powerful bomb ever made was the tsar bomb.
Greece is the most powerful country in balkans
yesnationalism the most powerful factor oF a country
It depends if the memory from the caster is happy enough.
Hydrogen bomb is the most powerful bomb
The most powerful water type is Suicune.
Japan has the most powerful economy in Asia.
The most powerful ancient country ever is Iran! For thousand of years, Iran had been able to have a stable empire from very west to the east of the world. And It is still called with that ancient name which makes it the oldest established country! I would have to say Greece. When Alexander the great conquered Europe Greece was the biggest country and had the most powerful army in the world The Roman Empire because it built modern Europe.
wind
The European Union is the second most powerful entity in the world after the US. Although not technically a country, the EU holds the potential to be a superpower and is even more powerful than China. The EU is expected to fuse as one country someday and its also not expected to be surpassed as the second most powerful country.
Many believe that running the world's most powerful country makes the president the most powerful person in the world.