Egypt's entrance into the Second Intermediate Period was caused by decentralization and quarreling, which left it helpless against assault by the Hyksos, who mounted a hostile that succeeded to a great extent due to the component of shock and their military leeway of steeds, chariots, and composite bows. The time of control by the Hyksos is recorded as "run by remote sovereigns" and at last offered path to the Middle Kingdom in the mid-1500s BCE, as Kamose and afterward Ahmose effectively crushed the Hyksos and drove them out of Egypt. In this way, Egypt tried to recapture the domain it had lost under the Hyksos and in the long run vanquished as far north as the Levant close Syria and south into Nubia.
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The answer to this question is "Gist" which means essence or substance. As per the Fuzzy Trace Theory, at some point during the early elementary school years, it was observed that the children begin to use GIST more and this attributes to the improvement of memory and the reasoning skills of the children at this very early stage.