What advantage did the Greek army have at the Battle of Marathon? They had more archers than the Persians.
They had a larger cavalry than the Persians.
They were skilled at fighting from a distance.
They were better prepared for a close-range battle.

They were better equipped to fight on land. They had more archers to use in the invasion. They trapped the Persian ships in a narrow area of water. They were able to surround the Persian army in the mountains.

answer; when one group has an extremely high score at pretest;

answer; no longer than a reasonable period of time;