The fall of the Achaemenid Empire ( 334-330 BCE), and its replacement with the newy created political order, imposed by Alexander the Great (d. 323 BCE) and his Hellenistic successors, marked an important turning point in the history of Aramaic language. During the early stages of the post-Achaemenid era, public use of Aramaic language was continued, but shared with the newly introduced Greek language. By the year 300 BCE, all of the main Aramaic-speaking regions came under political rule of the newly created Seleucid Empire that promoted Hellenistic culture, and favored Greek language as the main language of public life and administration. During the 3rd century BCE, Greek overtook Aramaic in many spheres of public communication, particularly in highly Hellenized cities throughout the Seleucid domains. However, Aramaic continued to be used, in its post-Achaemenid form, among upper and literate classes of native Aramaic-speaking communities, and also by local authorities (along with the newly introduced Greek). Post-Achaemenid Aramaic, that bears a relatively close resemblance to that of the Achaemenid period, continued to be used up to the 2nd century BCE.