Zeus
Technically, NO ONE sends Echinda after Percy in the Lightening Thief by Rick Riordan. Monsters just seem to find Demigods because they have a specific scent.
In the Percy Jackson series, Percy and his friends face various monsters including minotaurs, hellhounds, medusa, chimera, cyclopes, and harpies. These monsters are usually sent by the Greek gods or other enemies to thwart Percy's quests.
The Chimera was actually from a myth in ancient Greece so people could say that it is from ancient Greece.
capture her for hades but you know why if you read the book would ask that unless you haven't read the book and just want to know the answer
Percy wanted to barter with Hades because his mother was abducted by the Minotaur, that was sent by Hades to destroy Percy. Percy wanted to get his mother back, so he went to the underworld to barter with Hades. However, he was also sent to barter with Hades for the lightning bolt. Hades was accused of possessing the bolt, so Percy was sent to the underworld to get the bolt back.
Hades sent the Minotaur to abduct Percy's mother.
I don't lnow
grover was sent to protect percy, so the most likely knew each other since they where really young
Spain to attack England
A fez.
she married him because she wanted to hide percys sent. his sent was so strong, the monsters couldn't find him.
Because she hadn't told Percy he was a half-blood and when half-bloods know they are, their scent to monsters is even more stronger.