Gee..if it was just all round powerful..id have to say england with its navy. Britanica practically controlled the seas for 300 years..colonised, and had a saying that the sun never set on the britsh empire.
Yep, id say England or Great Britain.
If we should have to fight, we should be prepared to do so from the neck up instead of from the neck down. General James H. Doolittle, USAAF