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They didn't have the technologies that other civilizations did. They stayed the same from the classical period to the post classical period based on technology
the major discovery that was made on 1271 to 1295 was the compass that was made to find direction's compass was an instrument used to find direction's also includes a needle that always pointed north
A revival of interest in learning, due to the importation of important scientific and medical advances of the muslims. Also caused increased trade to acquire the luxuries the soldiers had become acquainted with, that help to transmit the Bubonic Plague into many formerly isolated areas
Eb Major
The Black Plague is one of the major events.
temperature
it caused major separation in society, and the lack of social mobility in one's life-time.
The major accomplishments of the Teotihuacan and Toltec civilizations were the formation of strong trade connections.
shba
They provided a high rate of accurate fire at long range. This caused major changes in tactics.
The major theory is fück you.
Around 1200, rules of shatranj started to be modified in southern Europe, and around 1475, several major changes made the game essentially as it is known today.
monsoon rains
monsoon rains
The Maya, Inca, Aztecs, and the Mesopotamians.
Fluctuations are generally due to one of three major factors:change in the volume of water stored in the aquifer,changes in atmospheric pressure,changes caused by aquifer deformation.Fluctuations can also be caused by increased precipitation as well as tidal variance in coastal areas.
The distance and importance of trade connections