Analysis of information sources in references of the Wikipedia article "阿契美尼德帝国" in Chinese language version.
Cyrus the Great, founder of the First Persian Empire (c. 550–330 BC).
Although the Persians and Medes shared domination and others were placed in important positions, the Achaemenids did not—could not—provide a name for their multinational state. Nevertheless, they referred to it as Khshassa, "the Empire".
The Athenian support was particularly troubling to Darius since he had come to their aid during their conflict with Sparta
A superimposition of the maps of Achaemenid and Alexander's empires shows a 90% match, except that Alexander's realm never reached the peak size of the Achaemenid realm.
Although the Persians and Medes shared domination and others were placed in important positions, the Achaemenids did not—could not—provide a name for their multinational state. Nevertheless, they referred to it as Khshassa, "the Empire".
A superimposition of the maps of Achaemenid and Alexander's empires shows a 90% match, except that Alexander's realm never reached the peak size of the Achaemenid realm.