Why was the centrality of st. louis important to the settlement of the western part of the united states?

St. Augustine is the oldest permanent settlement in the united states

Explanation:

The answer is D) the location of three major rivers aided in transportation and settlement  

this question does't support enough resioning to answer.

the answer is: c. c.it limited the president’s power to start wars.

the war powers resolution of 1973 requires the president to notify the congress whenever the president wanted to order a military operation to other countries within 48 hours. if after being reviewed the congress disagree with the proposal, that the president will be banned from ordering the operation.