Answer:
Most runners know the legend of the marathon, which goes something like this: In 490 B.C.E., after the Athenian army defeated a bunch of Persian invaders at the coastal town of Marathon, a Greek messenger named Pheidippides dashed off to Athens, 25 miles away, dramatically announced his side's victory, and collapsed
A system of peace treaties that involved harsh penalties for aggressor nations and their allies
<span>The answer is C-The soil became too salty for crops to grow.</span>
