Cross cultural similarities in design is often used as evidence to support Ancient Alien Theorists. Does it PROVE alien contact? No. It MAY show evidence of an far more ancient "Mother" culture which taught other, smaller cultures who, in turn, taught other cultures, etc. Or, it might simply be that people are basically the same wherever they lived. By trial and error, they learned that in order to make a structure stable & REALLY big, a pyramidal design worked best.
Geological map of Canada
Site de M. Omrane professeur d'Histoire Géographie
Languages of Europe via Twitter
Les Grandes découvertes et le premier partage du monde au XVIe siècle
Map of the supercontinent Pangaea of the triassic period [534x800] - Imgur