You can obtain it at Pastoria City, I think. I will find out for sure!
directly below sandgem town
Electivire must be evolved from an Electabuzz, which must be evolved from an Elekid.
RegiRock
lost tower 5th floor
in nimbasa at one of the buildings, you see an ace trainer. he will give you strength.
go to varrock then go in the bank and get out a strength potion u noob
A man in Nimbasa City gives it to you.
Nimbasa city, it is from a boy in a house.
Your Pokemon are supposed to learn strength and move the boulders to the wholes.
From a man in the building north west of the Pokemon Center in Nimbasa City.
You get strength at the cafe left of the Pokemon center in olvine city, the sailor gives it to you. Hope this helped
you get hm strength and hm defog after defeating two gym leader.Fantina(defog) Byron(strength).