Final answer:
Reconstruction was a period of time when Black Americans in the South gained more rights, but these rights were limited. Option c.
Step-by-step explanation:
The most accurate statement about Reconstruction (1863-1877) is option c. Reconstruction was a period when Black Americans in the South secured more rights, but unfortunately these rights were limited.
During Reconstruction, the United States sought to restore the southern states to the Union and define the rights of freedmen. While Black Americans in the South did gain some rights during this time, the rights they secured were ultimately limited. While the passage of the 13th, 14th, and 15th Amendments granted rights to African Americans, their implementation was hindered by racist policies and attitudes in the South.