(PLEASE HELP ME TODAY) How did ostracism serve as a social control in ancient Athens? Do you think it could be effective today?

Ostracism was a procedure under Athenian democracy in which any citizen could be expelled from the city-state of Athens for ten years. While some instances clearly expressed popular anger at the citizen, ostracism was often used preemptively. it could be  but i am not sure

Explanation:

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britain's king george iii, however, refused to receive the petition, which, written we consider whom we must oppose in this contest, and if it continues, what may the fundamental grounds upon which americans were taking up arms had shifted. that king george refused to so much as receive the

four sitting presidents have been assassinated while in office but the first was abraham lincoln,