What statement BEST summarizes early Reconstruction efforts?

Early Reconstruction efforts aimed to reintegrate the Southern states into the Union and address the legal status of formerly enslaved individuals. The period was marked by the implementation of the Freedmen's Bureau, which provided assistance to newly freed African Americans, and the passage of the 13th, 14th, and 15th Amendments, which sought to ensure civil rights and voting rights. However, these efforts faced significant resistance from Southern states and white supremacist groups, leading to a tumultuous and often violent struggle over the direction of Reconstruction policies. Ultimately, early Reconstruction laid the groundwork for future civil rights advancements, despite significant challenges and setbacks.