It was destroyed by the Almoravids, who took control in the country for the next ten years.
Explanation:
The sacking of Ghana by Almoravids in something that can be seen even as a holy war led to the decline of its power and its trade links. Although their rule lasted for only a couple of years, they weren't able to recover and to extent their trade once more as they did before this event.
The Salem Witch Trials were a time in the late 1600s. It first started when two girls were acting strangely as if someone was poking them. More than 200 people were accused of being witches. Some were found guilty and hanged.