The <span>American Revolution was a radical break with the past </span>in the sense that no colony had ever overthrown its colonizing power before, and independence was considered almost impossible. It preserved the status quo in that the Americans actually adopted a form of government that was very similar to the British.
The comparisons between them are
Athens peaceful, spread out, traded all the time.
Sparta military, wars, no trust, no trade, win wars, get more territory.
Athens most lasting effect
Hope this helps :)
B. Taxation without representation