If we're talking guitar based music, which I guess we are, then acknowledgment has to go to one of the most innovative inventors/designers in the musical instrument industry - Leo Fender... and Les Paul should probably get a mention too.
So, the US had these cutting edge instruments (both guitars and amplifiers) right in their backyard from the outset of rock n roll taking off, which no doubt facilitated experimentation into this new territory. Being a predominantly Anglo pursuit, their UK cousins were putting their own spin on it too. Enter the British Invasion, and a healthy dose of one-upmanship and you've got a recipe for progression and the ongoing creation of "better" music.
So, the US had these cutting edge instruments (both guitars and amplifiers) right in their backyard from the outset of rock n roll taking off, which no doubt facilitated experimentation into this new territory. Being a predominantly Anglo pursuit, their UK cousins were putting their own spin on it too. Enter the British Invasion, and a healthy dose of one-upmanship and you've got a recipe for progression and the ongoing creation of "better" music.