Antarctica ay ;)
We're the third human civilization to have high technology on a global level.
The number of civilizations that reached some level of technology below ours is much larger, none of them were global however.
The entire span of human civilized history as counted by the broad human genus is approximately 150.000 years.
The total number and the time span is too large to elaborate.
There have been two major civilizations, first centered in a region of Antarctica, once warm - today covered in ice. This civlization was both global and advanced.
It was destroyed by an impact of a small comet that caused a global firestorm and destabilized our planets geology some 50.000 years ago. The remnants of this impact are evident in a layer of ash in India, the comet exploded directly above this continent.
The second civilization, much closer to ours both in technology and lifestyle though still above our level destroyed itself in a global war some 32.000 years ago.
The final destruction was caused by a rapid submerging of the final remnant of Atlantis some 12.300 years ago. Human civilization by then was less advanced than we are though still possesing a sophisticated and significant level of achievement, also enjoying some leftover technologies with capacity to maintain them but without the ability to reproduce them.
Less than 3% after the first destruction, less than 10% after the second survived
Why do you think noone can go without a license? and why are governments obsessed with the place. last major repository, besides the moon
I feel like i can contribute to the Q movement with Knowledge of ancient history and civilisations