What were some of Maria Theresa's failures?

Maria Theresa faced several challenges during her reign, including military defeats, particularly in the Austro-Prussian War, which resulted in the loss of Silesia. Her efforts to centralize and reform the Habsburg Empire met resistance from various provinces and nobles, leading to tensions and limited success. Additionally, her attempts to strengthen the economy through taxation and modernization were often hampered by widespread resistance and financial difficulties. These failures highlighted the difficulties of governing a diverse and fragmented empire.