As far as technology goes it would be the USA.
After fighting the most powerful nation on earth for over a decade, the NVA was by far the most hardened Army in SE Asia.
The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.The most powerful factors that helped Rome become most powerful was their army, their determination and their organizational ability.
Americans faced a devastating war against perhaps the most powerful nation on earth. They found the world's largest navy and best-trained army poised against them.
Sparta had the most intense and powerful army in the time of the Persian Empire.
China's.
According to Superman, the Martian Manhunter is the "only one I wouldn't want to face" on Earth.
You cant, God created earth and always will be the most powerful person
Pearl Harbor. That attack brought the most powerful nation on the face of the earth into WWII.
CHINA
The United States.
Frederick the Great of Prussia was the most powerful.
No, there are more powerful militaries in the world.