The three periods were: Preclassic, Classic, and Postclassic.
No
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they collapse in the 900s
Because Diego de Landa, a bishop of the Yucatin, ordered all Mayan books destroyed. Only three survived.
The mayan believed in a world of three layers, they are cheese, mustard and ketchup.
Because
The Mayan ritual calendar, known as the Tzolk'in, consisted of 260 days. It was made up of 20 periods of 13 days each.
No
The Mayan calendar Tzolk'in has 260 days. It is composed of 20 periods of 13 days each. These days are linked with 20 names and symbols.
Mayan, Inca, Aztec
There are at least three Mayan calendars. The next 'Great Cycle' starts on 22nd December 2012 (Gregorian)
There are at least three Mayan calendars. The next 'Great Cycle' starts on 22nd December 2012 (Gregorian)
The Mesopotamians
The answer will depend on what the "myan civilation" (whatever than means) was or is! I suggest some checking of your spelling may be a good idea.
The Mayan calendar was created during the time of the ancient Maya civilization, with different components developed at different periods. The Long Count calendar, for example, originated around the 5th century BCE.
nobles preists and merchants
chief ruler