In the 12-year Reconstruction period, describe the conflicting plans presented (at least 2 differences) by Lincoln before the war ended and that of the radical Republicans led by Thaddeus Stevens. Also, explain why the Reconstruction abruptly ended in 1877.

in a sentence only please

Lincoln's plan for Reconstruction, which focused on reunifying the country with leniency towards the South, differed from the radical Republicans' plan led by Thaddeus Stevens, who sought to impose harsher penalties and protect the rights of newly freed African Americans; Reconstruction abruptly ended in 1877 with the Compromise of 1877, which saw the removal of federal troops from the South in exchange for Rutherford B. Hayes becoming president.