Here is the correct chronological order of the legislation you provided, based on their historical context:
- Wade-Davis Bill (1864) - Although it was pocket-vetoed by President Lincoln, it was a significant piece of legislation proposed during the Civil War for the Reconstruction of the South.
- Reconstruction Act (1867) - This act was part of the Congressional Reconstruction efforts and laid out the process for readmitting Southern states into the Union.
- Fifteenth Amendment (1870) - This amendment was ratified to guarantee African American men the right to vote.
- Compromise of 1877 (1877) - This informal agreement settled the disputed 1876 presidential election and effectively ended Reconstruction.
So, the order is: II, I, III, IV.