Frederick Augustus, who ruled Poland-Lithuania in personal union, was especially interested in gaining control of Silesia to connect his two realms into one contiguous territory (which would nearly surround Brandenburg); Frederick's concern to prevent this outcome contributed to his haste in moving against Austria when the contested succession provided an opportunity.
Frederick Augustus, who held authority over Poland-Lithuania in a personal union, was particularly concerned with gaining control of Silesia to create a single, contiguous territory that would surround Brandenburg; Frederick's desire to prevent this outcome drove his swift action against Austria when the chance arose from the disputed succession.