Final answer:
Linguistic influences on language divergence and the challenges in determining the exact number of languages worldwide are impacted by various factors.
Explanation:
Linguistic divergence can be influenced by various factors including migration, political events, and different brain structures among groups of people. Words that sound similar and have similar meanings may not establish a relation between languages due to linguistic variations and cultural influences. The exact number of languages in the world is challenging to determine due to factors like dialect continua and the dynamic nature of language evolution.
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