Which renaissance figure was a valued advisor to her husband the ruler of mantua and took charge of the court after he retired

The roosevelt corollary, issued in 1904, was a revision to what earlier statement of u. s. foreign policy?

Which russian tsar transformed thr royal residence in st. petersburg, the hermitage, into a center of culture, painting, and the performing arts

Following archduke franz ferdinand's assassination, austro-hungarian leaders: a. aided the ottoman empire in its campaign to keep serbia under its control. b. executed nearly all prominent serbs living in austria-hungary c. threatened to invade serbia if serb leaders did not agree to a set of strict demands. d.. formed an alliance with great britain to protect austria-hungary from future attacks.