The answer is blocking. This can be known as mental block. The blocking effect is the relationship between two spurs, a conditioned stimulus (CS) and an
unconditioned stimulus (US) is diminished if, for the period of the
conditioning process, the CS is obtainable together with a second CS that has previously
been related with the unconditioned stimulus.
Republic means the head of the state is an elected person
The Aztec civilization developed in Mesoamerica beginning in the 1200s. They created a 365-day agricultural calendar and used a sacred calendar as well. They created a writing system that was based on symbols and glyphs. There are Aztec books that remain and that share the rich depictions of Aztec legends. These books also detail the beliefs of the Aztec people and their daily lifestyle.
The Mayan people built their greatest cities between A.D. 250 and A.D. 900. They used two calendars with one being based on a solar year and one on a sacred almanac. The Maya also developed a three-symbol numerical system for recording numbers into the millions.
Both civilizations are praised because of their complexity in a time when many civilizations were very primitive. Along with the Inca civilization, these two are considered the "great civilizations." The Inca civilization is not mentioned in detail here because the civilization failed to come up with a writing system for recording information.
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