Please hurry Why were rivers and channels most important for people's survival during the medieval period?
They provided natural barriers for protection
They transported goods and people for leisure,
Their waters were used to power steamboats,
Their waters allowed people to communicate,

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.