Which is a logical question relevant to the information presented in the passage?

What kind os source would a historian use to get a firsthand account of a past event

The majority of victories and progress made by the women’s suffrage movement in the late 19th and early 20th centuries came from the industrialized north the denizens of the east the american west the reconstructed south

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.