There are no volcanoes because there are no active tectonic plates in the eastern portions of the US and Canada. Because the phenomena required for volcanoes: Hot spots, spreading zones and subduction zones, are not found there.
There are no active volcanoes in the State of Georgia. Currently, (November 2104) the only active volcanoes are in Hawaii. There are a number of currently dormant volcanoes in Alaska, California, Washington, Oregon and Wyoming. These could become active at any time,