In a building north of the Pokemon Center in Nimbasa.
a guy in nimbasa city
You can find it at the top of the lost tower in Route 209.
its hm
HM04 Strength is found in Nimbasa City in the top-left building.
go to olivine..find a tavern near the pokemon center..a sailor will give you STRENGTH HM
make one of your pokemon learn the hm strength
With the HM move strength.
HM04 Strength is found in Nimbasa City in the top-left building if you do not go up the stairs in the city.
You can get it from a man in one of the houses in nimbasa city.
Surf, cut, fly, strength, waterfall, and dive
You have to find the safari zone wardens teeth. give it to him and you get strength
You have to have the HM Strength, which you can obtain at Nimbasa City, near the Pokemon center in one of the buildings there will be a guy that will give you the HM Strength an he'll talk about where you can use Strength.