Q: In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
The Battle of Marathon was a watershed in the Greco-Persian wars , showing the Greeks that the Persians could be beaten ; the eventual Greek triumph in these wars can be seen to have begun at Marathon .
A:
The Battle of Marathon was a watershed in the Greco-Persian wars , showing the Greeks that the Persians could be beaten .