In what one way did the 1876 elections signal the end of reconstruction?

The 1876 elections signaled the end of Reconstruction primarily through the contested results and subsequent compromise that effectively ended federal intervention in Southern affairs. The election between Rutherford B. Hayes and Samuel J. Tilden resulted in a disputed outcome, leading to the Compromise of 1877, where Democrats conceded the presidency to Hayes in exchange for the withdrawal of federal troops from the South. This withdrawal allowed Southern states to regain control and implement Jim Crow laws, thus dismantling the Reconstruction era's advancements in civil rights for African Americans.