It may be of interest here to quote the passage referring to this.

The text in question is the exceedingly important syllabary designated by Prof. Fried. Delitzsch “Syllabary B.” The text is unfortunately defective in the British Museum copy, but a duplicate found at Babylon by the German explorers completes it as follows:—

Uri[Cuneiform]Akkadū
Ari[Cuneiform]Amurrū
Tilla[Cuneiform]Urṭū.

From this we see that the ideograph for Akkad not only stood for that country, but also for the land of the Amorites (Amurrū), and for Ararat (Urṭū), both of them being more or less mountainous districts. That the ancient home of the Akkadians was of the same nature is, therefore, more than probable.

That the Akkadians were a conquering race is indicated by the legend of the god Ura, generally called “the Dibbara Legend,” where the hero, “the warrior Ura,” is represented as speaking prophetically as follows—

“Tâmtu with Tâmtu,

Subartu with Subartu,

Assyrian with Assyrian,

Elamite with Elamite,

Kassite with Kassite,