I believe the answer is Ancient Greece and The Roman Empire
Greek city-states have their own customs, currencies, laws and militaries. A citizen of an individual city-state is very loyal to his city-state and does not give loyalty to the total nation.
Answer:
Garibaldi fought for Italian unity and almost single-handedly united northern and southern Italy. He led a volunteer army of guerrilla soldiers to capture Lombardy for Piedmont and later conquered Sicily and Naples, giving southern Italy to King Victor Emmanuel II of Piedmont, who established the Kingdom of Italy.
Explanation:
Is significant, but unpredictable.