Complex sentence: Over 750 girl groups were able to chart a song between 1960 and 1966 in the US and UK, although the genre's reach was not as strongly felt in the music industries of other regions.
Split into simpler sentences: Over 750 girl groups were able to chart a song between 1960 and 1966 in the US and UK. The genre's reach was not as strongly felt in the music industries of other regions.