The country with the strongest comprehensive national strength in the same period in world history.

1 5th century BC:1,the first18th dynasty of ancient Egypt, 2, the kingdom of Mitanni, 3, the kingdom of Hittites.

1 4th century BC:1,18 ancient Egyptian dynasty, 2, Hittite kingdom, 3, Assyrian empire, 4, Mycenae kingdom.

1 3rd century BC:1,19 ancient Egyptian dynasty, 2, Assyrian empire, 3, Shang kingdom, 4, Kingdom.

1 2nd century BC:1,20th dynasty of ancient Egypt, 2, Elam kingdom, 3, Shang kingdom, 4, 4th dynasty of Babylon.

BC 1 1 century: 1, Kingdom of Zhou, 2, Kingdom of Philistines, 3, Kingdom of Damascus.

10 century BC: 1, Kingdom of Zhou, 2, Tyre, 3, Kingdom of Israel-Judea.

9th century BC: 1, Assyrian Empire, 2, Zhou Kingdom, 3, Uraltu Kingdom, 4, Tyre.

8th century BC: 1, Assyrian Empire, 2, Uratu Kingdom, 3, 25th Dynasty of ancient Egypt.

7th century BC: 1, New Babylonian Kingdom, 2, Miti Kingdom, 3, 26th Dynasty of ancient Egypt, 4, Assyrian Empire.

6th century BC: 1, Ancient Persian Empire, 2, New Babylon Kingdom, 3, Lydia Kingdom, 4, Carthage.

5th century BC: 1, Ancient Persian Empire, 2, Athens, 3, Sparta, 4, Kingdom of Mojeto.

4th century BC: 1, Alexander Empire, 2, Peacock Empire, 3, Carthage, 4, Qin State.

3rd century BC: 1, Peacock Empire, 2, Qin Empire, 3, Roman Republic, 4, Seleucia Kingdom.

2nd century BC: 1, Han Empire, 2, Rest Empire, 3, Roman Republic.

BC 1 century: 1, Han Empire, 2, Roman Empire, 3, Rest in Peace Empire.

1 century: 1, Roman Empire-Claudius Dynasty, 2, Han Empire, 3, Rest in Peace Empire, 4, Guishuang Empire.

2nd century AD: 1, Roman Empire-Antoine Dynasty, 2, Han Empire, 3, Guishuang Empire.

3rd century AD: 1, Persian Empire-Sassanian Dynasty, 2, Roman Empire, 3, Golden Empire.

4th century AD: 1, Gupta Empire, 2, Persian Empire-Sassanian Dynasty, 3, Roman Empire-Constantine Dynasty, 4, Kingdom of aksum.

5th century AD: 1, Persian Empire-Sassanian Dynasty, 2, Gupta Empire, 3, Xiongnu Empire.

6th century AD: 1, Byzantine Empire-Justinian Dynasty, 2, Persian Empire-Sassanian Dynasty, 3, Sui Empire, 4, Eastern Gothic Kingdom.

7th century AD: 1, Tang Empire, 2, Arabian Empire-Umayyad Dynasty, 3, Byzantine Empire-Chilalio Dynasty.

8th century AD: 1, Arab Empire-Abbasid Dynasty, 2, Tang Empire, 3, Charlemagne Empire, 4, Byzantine Empire-Isurian Dynasty.

9th century: 1, Byzantine Empire-Macedonian Dynasty, 2, Arab Empire-Abbasid Dynasty, 3, Tang Empire.

10 century: 1, Byzantine Empire-Macedonian Dynasty, 2, Holy Roman Empire-Saxon Dynasty, 3, Kingdom of Có rdoba, 4, Bulgarian Empire.

1 1 century: 1, Song Empire, 2, Seljuk Empire, 3, Juro Kingdom, 4, Beihai Empire.

1 2nd century:1,Egypt-Ayub Dynasty, 2, Holy Roman Empire-Hohenstaufen Dynasty, 3, Golden Empire.

1 3rd century:1,Mongol Empire, 2, Egypt-Mamluk Dynasty, 3, Republic of Genoa.

1 4th century:1,Timur Empire, 2, Ottoman Empire, 3, Ming Empire, 4, Boyi Kingdom of Manchu Dynasty, 5, Sultanate of Delhi-Turuk Dynasty.

1 5th century:1,Ming Empire, 2, Ottoman Empire, 3, Sanghai Empire, 4, Inca Empire, 5, Republic of Venice.

1 6th century:1,Kingdom of Spain, 2, Ottoman Empire, 3, Ming Empire, 4, Kingdom of Portugal, 5, Mughal Empire.

1 7th century:1,Kingdom of France, 2, Republic of the Netherlands, 3, Ottoman Empire, 4, Qing Empire, 5, Mughal Empire.

1 8th century:1,British Empire, 2, Russian Empire, 3, Qing Empire, 4, French Kingdom, 5, Austria-Habsburg Dynasty.

1 9th century:1,British Empire, 2, French Republic, 3, German Empire, 4, United States of America, 5, Russian Empire.

20th century: 1, USA, 2, Soviet Union, 3, Germany, 4, Japan.

2 1 century: USA, China, India? , EU?