The economy you described in your question is called a market economy. It has free markets and the production of goods and services are determined by the consumers.
4838400 seconds? i searched lol
I believe the answer is C. It would have the most economic effect.
He tried to resolve it by sending unarmed supply ships to the fort. However is was unsuccessful.
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At first the Native American's were fine to share their land with the colonist, but it be came more clear that the colonist were starting to push the Native Americans out of their land. So how do the Native Americans think about Manifest Destiny they see it as invasive and intrusive movement that was being done by the colonist and were more than willing to go to war for their land.