Why does the federalist papers authors mention ancient Greece so frequently?

The authors of the Federalist Papers frequently referenced ancient Greece to draw parallels between the classical democratic ideals and the challenges faced by contemporary governance. They highlighted the successes and failures of Greek city-states, particularly in relation to democracy and republicanism, to illustrate the importance of a balanced government structure. By citing Greece, they aimed to reinforce their arguments for a strong, unified federal system while cautioning against the dangers of factionalism and mob rule, which plagued many Greek democracies. This historical context served to legitimize their proposals and demonstrate the lessons learned from the past.