The link between conditioned and general anxiety explain why anxious people are hyperattentive to possible threats, and how panic-prone people come to associate anxiety with certain cues.

The answer is: The link between conditioned fear
Our brain is conditioned to eliminate the source of our fear before we could fully rested because in the past the source of our fear usually comes from something that could physically harm us (such as wild animals, or potential attacks from other tribes)

France played a key role in the american revolutionary war (american war of independence; 1775–1783). motivated by the ideals of the new nation which were inspired by the french enlightenment, as well as its long-term rivalry with britain and so as to avenge their territorial losses during the french and indian war, france secretly began sending supplies to the americans in 1775.