It was Lev V<span>ygotsky, a Soviet psychologist, who theorized about the aided and the preceded concepts regarding the development of language. His theory was mainly focused on human bio-social and cultural development and for him interaction is a necessary tool in one's development.</span>
Paper making, the compass, and printing
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The answer is A I’m 25% sure
Answer:
1.9 billion people use social media actively
