They want to turn them into mice.
Unlike everything else in the recent history of the world, England was not even the initial base. The Witches started off in wonderful Norway (the cold probably drove them to such madness!) And, thus, in Norway witches are common knowledge. From there the witches advanced to other countries and there are branches in every other country (with the US and UK seen as big hopes). Norway was the HQ, but the witches killings branched off everywhere else. So, Luke probably saved a global cannibalisation of children.
Wherever they want.
No. There are no witches in Gambia. But there are some gullible people that may believe in witches for no good reason. If you want to find some real live witches, you can find them in the United States. However do not get the mistaken belief that witches are necessarily evil or servants of Satan, the devil or Lucifer. Real witches are descendants of ancient earth and pagan religions.
the villagers want him to go to the evil witches house and demand that the witches stop turning his daughter into a witch.
to escape harsh punishments. She is saying what her 'superiors' want to hear. They want to see/hear witches so she is giving them witches.
Well, Witches and Genies are both mythical things so we don't know because we never saw then. But, Witches have spells and magic and Genies can do anything you want them to do. So I would say Genies are more powerful.
When dealing with witches you always want to have a warlock or two on hand to counter any negative mojo they put out.
Witches can be of any age, as long as the individual is old enough to make choices about what they believe and what they want to do. Witches can be female or male and are not different from any other individuals in every community.
Hecate wants the witches to create a magical potion to deceive Macbeth and lead him to his downfall. She wants them to use their powers to manipulate Macbeth into feeling overconfident and secure, which will ultimately result in his defeat.
Wizards, Witches, and you go to school to learn magic.
In response to Macbeth's questions, the witches prophecize that Macbeth will become king and encourage him to take action to make the prophecy come true. They manipulate his ambition and plant seeds of greed and paranoia, which ultimately lead to Macbeth's downfall.
In the seventeenth century, some people took witches very seriously indeed, as the events in Salem Massachusetts show. But curiously, in Shakespeare's play Macbeth, the witches are kind of silly and sing cute little songs. These songs were apparently added to the play by another playwright, Thomas Middleton, because the audience wanted the witches to be funnier. Nowadays no productions of Macbeth actually use the silly witch lines, because modern audiences want the witches to be scary. Maybe that is because they are not really frightened of them.