After reading acts 1,2, and 3, what caused the salem witch trial hysteria of 1692?

As far as the Crucible goes we were dealing with petty grievances by various townspeople. Abigail had it out for Mrs. Proctor. Thomas Putnam coveted land, Reverend Parris had a host of petty little grievances....Calling people witches was a sure fire way to get back at people or even get rid of them permanently. The accusations blew up into full blown hysteria where nobody was safe.