What was King Frederick trying to do when he invades a possession of the Holy Roman Empire in 1740?

When King Frederick II of Prussia invaded the Silesian province of the Holy Roman Empire in 1740, he aimed to expand Prussia's territory and increase its economic resources. This move was also motivated by the desire to assert Prussian power and prestige in Europe, as well as to capitalize on the political instability within the Habsburg Monarchy following the death of Emperor Charles VI. The invasion marked the beginning of the War of the Austrian Succession, as it challenged the legitimacy of Maria Theresa's claim to the throne.