Yes, there is one in Dunmore East, County Waterford.
There are no Old Order / New Order Amish remaining in Europe. There is a Beachy community that left America and has established itself in Ireland. They Beachy were a divison off the Old Order Amish that chose to modernize.
No, it is a Mennonite community, which bears some similarities with the Amish.
Montezuma, Georgia is home to a conservative Amish Mennonite community, but they are mostly Mennonite. There is a small Amish community just outside of Winder, Georgia as well.
very few
Yes there is an Amish community near Chalmette
Nabiac....NSW (Amish Mennonite)
There is no single leader of the Amish. Each Amish community is managed by its elders, and each community is independent of the others, although they communicate and help each other.
No. The Amish are a religious community with its origins in Switzerland.
An Amish community in New South Wales can be found in Nabiac, near Forster.
Arthur
Rumspringa
Most Amish don't use technology. They see it as a distraction, and they have other religious views about it. Each Amish community has a sort of "rulebook" called an Ordnung that is different for each community- for example, one community might be allowed to have a telephone for the entire community, and for another it wouldn't be so. Also, a lot (NOT ALL) Amish people don't feel comfortable with associating themselves with non-Amish peoples and/or don't feel a need to explain themselves. Some people were Amish when they were younger, though, and have "converted" to a non-Amish lifestyle, so don't be surprised to see answers from once-Amish people.