Strep throat has been around as long as humanoids
have had throats ... way before calendars.
The answer is seafloor spreading
The reason for language diversion is the isolation of the people who speak the same language, but due to diversion and lesser contact between these people, now the language is used only in the dialects.
Answer: People who think more through the right side of the brain tend to be more creative.
Explanation: There is a term called lateralization. Lateralization means that some processes and functions entwine with left or right side of the brain more. People who tend to say that they are more ''left-brained'' are more logical and the people that say they are more ''right-brained'' are more creative. They have better emotional intelligence and their imagination developed, good intuition etc.