That machine gun was first let out in the mid 1900’s and it changed the way of fighting from the one shot reloaders that they had before this invention. This gun changed the nature fighting by allowing more rounds to be produced at the enemies causing more to be dead. This gun helped kill off more people and helped gain more accuracy in the creation of guns til this day.
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Answer:
He is known for flow psychology and positive psychology.
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https://www.britannica.com/place/France
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