Compromise of 1877 and home rule is the two ways the 1876 elections signal the end of reconstruction. Compromise of 1877 is one of the two ways they did to signal the end of reconstruction in 1876 the other one was Home rule. The answer in this question is Compromise of 1877 and home rule.
I believe THE ANSWER IS A,D
It stemmed from the annexation of the Republic of Texas by the U.S. in 1845 and from a dispute over whether Texas ended at the Nueces River (the Mexican claim) or the Rio Grande (the U.S. claim).