Could trans-Atlantic trading have been established as early as 3,000 BC?

"More and more scientists are agreeing that Bronze Age Europe was indeed a maritime system. Is it that impossible to suggest that travellers who sailed from Spain to Scotland would not have been able to cross to America? Some might argue that the waters of the ocean were far rougher than those coastal waters, but anymore [anyone] merely has to travel around Cornwall – where the ships had to pass to take tin – [to] know the seas there are extremely rough.
Would it be impossible to assume that a world economy of copper and tin existed in 3000 BC? For those who believe that the answer is that this is impossible – note how dangerous it might be to expel such a possibility out of hand…"
There never was nothing.