The answer is a. It portrays Athens as being unique, innovative, and influential.
Answer: The establishment of three U.S. army forts along the Bozeman trail through Lakota annexed Crow Indian treaty territory caused Red Cloud's war. The Crows fought back against the Indian trespassers by helping the troops in the very same forts that Red Cloud wanted closed.
Perhaps the greatest transportation development that took place during this time was the creation of the railroad, which many travel and the transfer of goods far easier and therefore far cheaper.
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Im pretty sure one of the main reasons is because of the treaty system
