Which of the following events did not contribute to the decline of the feudalism and the end of the medieval period in europe

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.

John locke believed there was a social contract between a govemment and its people. what were the details of this contract?

What was the effect of the industrial revolution on the working class ?