The claim that 70's Britain produced the best rock music is subjective and cannot be proven or disproven. However, it is worth examining the factors that made the 70s an important period for rock music in Britain.
Firstly, the 70s was a time of social and cultural change in Britain. The punk movement emerged in the mid-70s, challenging the established music industry and offering a raw, rebellious sound that resonated with young people. This movement brought a sense of excitement and energy to British rock music and influenced many other genres of music.
Secondly, the 70s saw the rise of many iconic British rock bands such as Led Zeppelin, Pink Floyd, Queen, and The Rolling Stones. These bands had a significant impact on the global music scene and continue to influence musicians today. Their music was innovative, experimental, and boundary-pushing, which contributed to the diversity of rock music during this period.
Thirdly, the 70s was a time of technological advancements in music production, which enabled musicians to explore new sounds and create more complex compositions. The use of synthesizers, drum machines, and other electronic instruments became more prevalent, which contributed to the evolution of rock music.
However, it is important to note that rock music did not begin or end with the 70s, and many other countries and time periods have produced significant contributions to the genre. For example, the United States produced influential rock bands such as The Beatles, The Beach Boys, and The Doors in the 60s, and grunge music emerged from Seattle in the 90s.
In conclusion, while the 70s was an important period for rock music in Britain, it is impossible to say definitively whether it produced the "best" rock music. Music is a subjective art form, and what one person considers to be the best may not be the same for another. However, it is clear that the 70s was a time of innovation, experimentation, and cultural change, which contributed to the diversity and richness of rock music during this period.