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Solve this system of equations using the elimination method?

Quickly ill give anyone brainliest plus free points if answered as a good rule of thumb, you should take a 15-minute break every while driving. a. 1 hour b. 2 hours c. 3 hours d. 4 hours

Briefly explain how one development from the period 1861 to 1865 not directly mentioned un the excerpts supports mcpherson's argument