Complex sentence: Prominent amongst the numerous regions around the country where the garage craze came into full swing was the Golden State, which was in some ways just as much a byproduct of the surf rock, which had preceded it, as the more recent British Invasion.
Split into simpler sentences: Prominent amongst the numerous regions around the country where the garage craze came into full swing was the Golden State. In some ways this trend was just as much a byproduct of the surf rock, which had preceded it, as the more recent British Invasion.