What was acquiring guam important for the united states

How many battles were confederate victories? (specifically: major battles)

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

How did the us change it’s economy to provide supplies for the war effort?