So, how quickly could we move up the creation and distribution of the radio? An addendum to this question: What's the earliest electric instruments could come about, and what's the earliest rock music could come about?
Now, for the question on rock music, they don't necessarily have to be popular, they could be niche. The timeframe I was thinking of would be like 1820s, but I'm pretty certain that is impossible. So, what's the earliest we could bring about radio and other things?
Note: POD should be post-1600, as butterflying away history by having a POD in 2,000 BC is just to easy.
Now, for the question on rock music, they don't necessarily have to be popular, they could be niche. The timeframe I was thinking of would be like 1820s, but I'm pretty certain that is impossible. So, what's the earliest we could bring about radio and other things?
Note: POD should be post-1600, as butterflying away history by having a POD in 2,000 BC is just to easy.