When things happen, they happen all over the globe.
Powered flight - the Chinese had kites for thousands of years, and so, how did it come about that the wright brothers built an airplane only two weeks before a Frenchman did so?
The same with the radio.
The same with many many other inventions.
So, archaeologists and such think of tracing something back to a central source. However, it is much more likely that the idea developed all over the world. And if you listen to the aethers, or to the muses, you can hear and watch as new technologies come into being. And every time, there is more than one group doing it.
From a holy text point of view. There are so many similar tales. It is easy to think of it all coming from one source. Or, it is better to say that there was one event, and many eyes saw that event?
Things like the Jesus story. 12 disciples. Birth from the virgin. Died 3 days, was resurrected. The docudrama Zeitgeist goes into many many similarities across much space and time. So, is this one instance, or a cycle that repeats? Since time is circular, I would suggest this is a cycle that repeats. This is even more evident if you study the ancient buddhist texts who catalog their teacher's comings and goings.
Excellent observation, thanks. Kites would explain how the geoglyphs could be built. What do you think someone up in a kite could use for reliable communication with those on the ground?
Note: I have not heard of kites being found in North and South America but that does not mean they did not exist. Balloons could have also been discovered and used but again, communication with the ground.
Yes, a truly great observation.
I just thought of something based on your kite observation: At the time the geoglyphs in the U.K. were have supposed to have been made the native Britons dyed themselves blue and were the equivalent of Stone Age cavemen according to the Roman conquerors. Therefore: something really bad had to happen in order for the ancient british to descend to that level from when they built Stonehenge and the geoglyphs: what does everyone think?