Culture:

Cambridge English Dictionary states that culture is, "the way of life, especially the general customs and beliefs, of a particular group of people at a particular time." Terror Management Theory posits that culture is a series of activities and worldviews that provide humans with the illusion of being individuals of value in a world meaningraising themselves above the merely physical aspects of existence, in order to deny the animal insignificance and death that Homo Sapiens became aware of when they acquired a larger brain.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What did Homo Sapiens acquire that allowed them to become aware of Culture?
larger brain