Why did President Andrew Johnson reject the Radical Republican's Reconstruction plan for reorganizing the Southern economy and ending the plantation system

Andrew Johnson wanted to United The North and the South after Civil war.

Explanation:

The reconstruction plan that's proposed by Radical Republicans was aimed to severely punish the southern states after their defeat In Civil war.

Andrew Johnson have different perspective. Despite the southern states' misbehavior, that territory still important to United States' economy as a whole. He believed that the plan proposed by radical republicans will completely destroy the southern states and prevented the North and Southern states from ever uniting again.