Below you can find the This plain northeast of athens was the site of the athenians' victory over the persian army in 490 b.c. Jeopardy Words Answer. The answer to This plain northeast of athens was the site of the athenians' victory over the persian army in 490 b.c. has 8 letters. This clue belongs to the Ancient greece category and is part of Jeopardy Word Level 2308. If you scroll near the bottom you will find other clues and answers part of level 2308