If you had me, would you cheat?

Based on this graph, it is reasonable to assume that by 1930 the percentage of the population with the right to vote was

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 ?