1) The Empire's walls and 2) the Empire's divine protection by God.
Byzantine and Sasanian
Byzantine and Sasanian
(APEX) Two once mighty empires were collapsing because of internal strife and foreign invasions.
There are two reasons why primary victories are important to candidates. They indicate the strength of the candidate and provide information on the type of voters who are voting for the candidate.
The Byzantine Empire and the Sassanian Empire were so weak that the Islamic Rashidun Caliphate conquered 2/3 of the land of the former and completely conquered the latter.
The Persian and Romanian Empires
What two of the most successful empires of modern times?
The Byzantine Empire was a powerful nation which controlled the trading hub of Constantinople, and whose government offered a greater degree of stability than most European nations at the time. The Islamic Caliphate was a dynamic and prosperous nation which benefited from the zeal of its people and the power of its religion. Both empires were culturally and scientifically advanced.
There was a couple of first empires but two major ones were the Gupta and the Mauryan empires. Hope this helped!
There are two empires that had the same amount of territory ottoman. The two empires are Bosnia and Sultanate.
Several of them, qualify as such. However, the two most important are the Mexica or Aztec, and the Mayan Empires.
Please specify which empires you are referring to.