Which of these did the Kansas-Nebraska Act do?(2 points) Responses allowed states to decide if slavery was legal within their borders allowed states to decide if slavery was legal within their borders abolished slavery abolished slavery effectively overturned the Missouri Compromise of 1820 effectively overturned the Missouri Compromise of 1820 mapped out railroad lines through Kansas and Nebraska

The Kansas-Nebraska Act allowed states to decide if slavery was legal within their borders, and it effectively overturned the Missouri Compromise of 1820.