What, according to historians, caused 160 accusations of witchcraft in Massachusetts and Connecticut between 1647 and 1692?

The answer is:  Social insecurity wrought by colonial expansion

Explanation:

There was many people that looked at woman strangely and this whole executions were claimed to be fake at the end.  There was a lot of innocent people that were killed because they were thought to be witches.  

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.