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They were ships designed to ram other ships to sink them. They came about to counter the Persian threat as a noble in Athens convinced everyone (in Athens) that naval superiority was the best way to combat Persian force that used ships to invade Greece.
because of the Persian war they made blockades to block enemy ships.
By marching their army from Asia Minor around the Aegean Sea, and sailing their ships on the Aegean Sea.
Second Persian invasion of Greece happened in -480.
First Persian invasion of Greece happened in -492.
Greece was dominated by Athens after the Persian wars.
no
The first Persian invasion of Greece was during the Persian Wars in 492 BCE. It was ordered by the Persian King Darius I to punish the city-states of Athens and Eretria.
Persia did not conquer Greece. Persia attempted to conquer Greece but the invasion was repelled. Earlier, Greeks had fought against Persia in the Ionian Revolt, and the Persian invasion was intended as retribution for the violation of Persian temples.
Xerxes I.
Your dog
yes they did