Why was first aid created?

So people woudn't need to go to the hopital. First aid was created to give always the "firs-aids".The meaning of first aids is the cares given before doctor cares. First aid can lessen pain,stop bleeding,prevent germs from getting in a wound,sometimes even save a life.But firs aid must be done carefullyand skillfully.first aid must be practiced too.At least every must know some.First aid must be learned and known.