How can letters and diaries support an argument?

Theodore roosevelt beloved that the only checks on presidential power were

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.

Which of the following cultures were among the earliest known inhabitants of north america? a) mayab) incac) anasazi d) olmec