Before people relied on their own skills of hunting/gathering to survive, now people developed tools and methods to utilize nature to provide what they needs (such as breeding plants by their own or taking water source from a far region)
<span>before it was always moving to where animals were to hunt or plants now one could settle anywhere if they know methods to farm and breed and started to transform that place into food producing space on their own</span>
Probably the native Americans. it's been a while since i've studied that. the missionaries tried to convert many people, if i can remember correctly.
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The US Constitution limits the power of the president as comander in chief by giving Congress the ability to declare war.
The President of the United States cannot declare war without Congressional approval. The President does have the ability to put troops in another country for 60 days. However, if he/she does not get approval for those troops to be there, they must be removed within 30 days. This ability to check the power of the president is part of the checks and balance system established in our constitution.