Question: what were the principal issues of the war of austrian succession

title: War of the Austrian Succession
text: Frederick obtained an alliance with the French against the Austrians , signing the Treaty of Breslau on 5 June . Accordingly , the French began to cross the Rhine on 15 August and joined the Bavarian Elector 's forces on the Danube and advanced towards Vienna . The combined forces of the French and the Bavarians captured the Austrian town of Linz on 14 September . However , at this point , the objective was suddenly changed , and after many countermarches the anti-Austrian allies advanced , in three widely separated corps , on Prague . A French corps moved via Amberg and Pilsen . The Elector marched on Budweis , and the Saxons ( who had now joined the allies against Austria ) invaded Bohemia by the Elbe valley . The Austrians could at first offer little resistance , but before long a considerable force intervened at Tábor between the Danube and the allies , and Austrian troops including Neipperg were soon transferred from Silesia back to the west to defend the Austrian capital , Vienna , from the French .