In the field in interior politics he can be regarded as the most successful German politician of the early 19th century with a long list of achievements. Already in 1796, when the Duke of Zweibrücken (after the French advance towards Zweibrücken) was a landless prince exiled in Ansbach, Montgelas had developed a masterplan for the future modernisation of Bavaria. This lengthy paper, the "Ansbacher mémoire" was rediscovered in the 1960s and published in 1970 by the Bavarian historian Eberhard Weis, who also is Montgelas' biographer. After 1799 when Maximilian Joseph succeeded to the electorate of Bavaria, Montgelas as his primary adviser and leading statesman very much followed his concept throughout the following years in a very uncompromising manner: