WitchVox.com is considered to be the largest online Wiccan group.
a group of witches, sometimes 13 witches, is called a coven.
Not openly as far as I am aware but that doesn't mean that their music is not influenced by nature and the cycles of life which are also reoccurring themes in Wicca
Wicca, like many other Pagan paths does not have a government. There is no one way to practice, and although many groups have leaders within them, each group is as much different from others as it is the same.
Witchcraft is a way of life. It is a religion (or, rather, a group of religions) and magick. One form is Wicca.
Wicca has its own scriptures.
Wicca isn't based anywhere.
Insects are the largest group of arthropods.
Wicca isn't based anywhere.
No. Wicca is a religion, not a language.
Kikuyu is the largest ethnic group in Kenya.
No, halogen is not the largest group of the periodic table.
A Kingdom is the largest group a organism can be classified in.