Settled in prehistoric times, the central European land that is now Austria was occupied in pre-Roman times by various Celtic tribes. The Celtic kingdom of Noricum was claimed by the Roman Empire and made a province. After the fall of the Roman Empire, of which most of Austria was part (all parts south of the Danube), the area was invaded by Bavarians, Slavs and Avars. Charlemagne conquered the area in 788 and encouraged colonization and Christianity. As part of Eastern Francia, the core areas that now encompass Austria were bequeathed to the house of Babenberg. The area was known as the marchia Orientalis and was given to Leopold of Babenberg in 976.

Austria as a European Power:-

            The long reign of Leopold I (1657–1705) saw the culmination of the Austrian conflict with the Turks. Following the successful defense of Vienna in 1683, a series of campaigns resulted in the return of all of Hungary to Austrian control by the Treaty of Carlowitz in 1699. The later part of the reign of Emperor Charles VI (1711–1740) saw Austria relinquish many of these fairly impressive gains, largely due to Charles's apprehensions at the imminent extinction of the House of Habsburg. Charles was willing to offer concrete advantages in territory and authority in exchange for other powers' worthless recognitions of the Pragmatic Sanction that made his daughter Maria Theresa his heir. With the rise of Prussia the Austrian–Prussian dualism began in Germany.