Answer:
The good answer is: It supported Panamanian independence from Colombia.
Explanation:
Panama issued a declaration of independence from Colombia with the support of the United States. The move was planned by a local political faction linked to the Panama Canal Company, a French-American company that was interested in building a waterway connecting the Atlantic and the Pacific through the isthmus of Panama. The proclamation date is November 3, 1903. The action enjoyed the tacit approval of the Theodore Roosevelt administration. It impeded an armed response from Colombia by paralizing local trains and sending a US Navy ship.
Due to railways being added across the US, goods were able to travel faster and cheaper.
Sacajawea has the Native American woman that helped Lewis and Clark, mainly due to her brother being the leader of a tribe, which they needed to borrow horses from.
"<span>c. Its proximity to Africa and India made trade quite successful" is the best option, since a great deal of trade during this time and indeed today is done with ships. </span>