The Northwest Ordinance is considered a historical milestone because it ?

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.

What are new social classes emerged due to advancement in agriculture ?

During the era of european expansion, what was the biggest reason for spain’s push for exploration?