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The Step Pyramid was built in Circa 2630 B.C.
circa 2490 b.c
the 1st Pyramid was built in circa 2630 B.C.
circa 1800's
The Mayan civilization, circa 600 AD.
circa 432 BC by Phidias
Circa 1905!
they were estimated to be built at around circa 2630 B.C.
i believe circa 1833
Ripley's Believe It Or Not states that it was circa 2309 BC. If you belive it?
Circa 600 A.D. see related link:
The Temple of Poseidon at Cape Sounion, in Greece, was built circa 440 BC.