Answer: The external conflict in One Hundred Years of Solitude that is never resolved is the emotional rift between Rebeca and Amaranta.
Explanation:
Rebeca’s hopes of marriage are revived once Pietro Crespi has returned, but Amaranta suggests that Rebeca wait until the church is built, a process that Rebeca believes might take ten years. Pietro Crespi, too, is disappointed by the delay. The two lovers are found by Úrsula, kissing in the dark, and Úrsula dedicates herself to supervising their future visits. After three months of agony, Pietro Crespi donates the money Father Nicanor needs to finish the church. Amaranta removes the mothballs protecting Rebeca’s dress, but Amparo Moscote says she can sew a new dress in a week. Amaranta resolves to poison Rebeca’s coffee.