Asquirrel fails to react with fear to a signal of impending shock if they have suffered damage to the:

Amygdala

Explanation: Amygdala is a major composition of the brains of complex animals including Man, Squirrel etc. It is the composition of the Brain that helps to react during fear condition. If the Amygdala is damaged it will be difficult or impossible for the Animal to react to fear,like the case of the Squirrel to signals from an impending shock after the damage of its Amygdala.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

i do believe the correct answer is the spread of chinese culture throughout asia and africa.good luck

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