Take the points and report my question too​

Why was the monroe doctrine necessary?

In 1819, what did the united states obtain from spain for $5 million?

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife