I think it is B because the Columbian exchange was bringing what they already had in the old world to the New world and what the New world had that the old world didn’t they brought they brought to the old world if that makes sense.
Answer: The amphetamine speed is actually a “slang” name for the entire class of drugs known as amphetamines.
Explanation:
Prehistory is the history before any records (as in, detailed reliable records, such as writing), for which only very indirect evidence is available such as archaeological funds. So- there could be no weather reports from pre-history! if there were, we would call this time "history" - the correct answer is d.
