The answer is A- The movement declined in influence because its main goal had been achieved.
The birth of gunpowder was quite accidental. It was first invented inadvertently by alchemists while attempting to make an life-extending ELIXIR. It was a mixture of sulphur, saltpeter, and charcoal. At the end of the Tang Dynasty, gunpowder was being used in military affairs.
After the civil war, sharecropping and tenant farming took the place of slavery and the plantation system in the south.
He was more lenient to the confederates then the radical republicans and pardoned many which almost got him impeached
