What were the two groups involved in the Greco-Persian wars?

The Greco-Persian Wars of c.500-448 BC involved a series of clashes between the Persian Empire and the Greeks of Asia Minor and mainland Greece, and ended as something of a draw, with the Persians unable to conquer mainland Greece and the Greeks unable to maintain the independence of the cities of Asia Minor.

Explanation:

a historian researching the immigration policies of the early 1900s would expect a source written today,rather than in 1910 to :

( a ) be more interested in objective data and statistics.

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