Upper Saxony
It was particularly to distinguish the lands from 'Lower Saxony', a concept which arose later in popular usage (though never enforced) as a term for the original Saxon lands in north and west Germany (where Low German dialects had spread), in what is now the state of Lower Saxony, as well as the adjacent Westphalian region, Holstein and the western part of today's Saxony-Anhalt north of the Harz range (Eastphalia).
Saxony-Anhalt
After the official Allied decision to dissolve the Free State of Prussia, which had remained in limbo since the Prussian coup of 1932, its former provinces, in as far as they still existed, achieved statehood, thus the province emerged into the "State of Saxony-Anhalt" on 6 October 1947. It became part of the German Democratic Republic (East Germany) in 1949. From 1952 to 1990 the East German states were dissolved and Saxony-Anhalt's territory was divided into the East German districts of Halle and Magdeburg except territory around Torgau was in Leipzig. In 1990, in the course of German reunification, the districts were reintegrated as a state. But, territory around Torgau did not return to the state and joined Saxony. Now, Torgau is the centre of Nordsachsen district (since 2008).