The correct answer is fossil fuels and collective learning. According to David Christian, humans are <span>blessed with a language,so powerful precise that they can share what they learned resulting in the accumulation of learning in collective memory. This information can then be passed on to other generations to spur progress.</span>
Answer:
In my <em>personal</em> opinion, Taj Mahal is the most beautiful building ever!
I know that not everyone would agree with me.
Many people <em>would</em> agree with me too.
<span>Age group. Children are judged relative to how other children their age are performing. This was designed as a measure to figure out how much intervention children needed in standardized schooling. Later on, a similar scale would be developed for adults.</span>
