eaglesjohnson414 eaglesjohnson414 04-12-2020 History contestada How did the Emancipation Proclamation impact slavery in the border states that remained in the Union during the war? A) It freed all slaves. B) Slave owners had to show proof of ownership in order to keep their slaves. C) The Proclamation stated that owners could keep slaves if they helped with the war efforts. D) The Emancipation Proclamation did not impact slavery in the border states.