How long has it been since the us constitution was written?

When did paul zoll develop cardiac pacemaker

Is the idea of containment relevant to american foreign and policy today why or why not

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.