Which ancient civilizations are included in classical scholarship?

Classical scholarship is defined as the study of ancient Greece and Rome in all their aspects.1

Broadly, the field encompasses the period between the 2nd millennium BCE and 500 CE, focusing on the geographical areas covered by the conquests and spheres of influence of Greece and Rome at their widest extent. While the core of the discipline is centered on these two civilizations, the study of the ancient world often involves interdisciplinary research that may touch upon neighboring cultures and regions that interacted with the Greco-Roman world, such as those encountered during the Hellenistic Age or through archaeological and linguistic connections.123