Respuesta :

Mercy in the English language comes from Old French.  The Old French word 'merci' meant pity.  The word 'merci' comes from the Latin word, "merces" and "mercede".  Those words meant reward, or pity.
BranchandDaNai
What she said above is what I was going to say I cant cpy and paste it that wouldnt be fair so instead I will just agree with what she said above