Ferdinand Magellan
The Portuguese explorer Ferdinand Magellan is often credited as being the first person to have circumnavigated the globe
Because, at that time, the unwritten rule of the politics regarding this kind of situation was the rule of laissez-faire, meaning that the economy should be left do deal with it`s problems without the intervention of the government.
Media,family, friends, education level. Knowledge of the issues, if the issues directly affect you (like immunizations being mandatory for your kids). I'm not sure about the second half of your question.
I think it's D)all of above
But not a 100% sure on it
