Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Gallipoli:

"

The Persians were eventually expelled, after which the peninsula was for a time ruled by Athens, which enrolled it into the Delian League in 478 BC. The Athenians established a number of cleruchies on the Thracian Chersonese and sent an additional 1,000 settlers around 448 BC. Sparta gained control after the decisive Battle of Aegospotami in 404 BC, but the peninsula subsequently reverted to the Athenians. During the 4th century BC, the Thracian Chersonese became the focus of a bitter territorial dispute between Athens and Macedon, whose king Philip II sought its possession. It was eventually ceded to Philip in 338 BC.[citation needed]