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The Mayans lived from 420 to 900 AD. Out of all the civilizations listed here, the Mayans were the first ones. They also lived the longest.

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The Aztecs lived from about 1400 to 1521 AD. They lived very close to where the Mayans lived when they were a thriving community.

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The Incas were very important to the progression of not only themselves, but to the rest of the modern-day world.

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The Mound Builders built mounds of dirt that could be as tall as about 63 ft.

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The Mayans created a calendar. The calendar has multiple cycles and different times. It is the most accurate calendar that we know of. They actually used 3 different calendars, but this is the most common.

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The Mayans also built pyramids, which have become one of, if not the biggest, tourist attraction that dates back to about 3,000 years ago.

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In their towns and villages, they build canals, due to the fact that their city received a lot of rain. They are very close to the ocean, to they usually had flooding.

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Because they didn't live near any current communities, the Aztecs lived in large cities.

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The Mound Builders hunted small rabbits, deer, squirrels, other big game, and many more.

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The first of the civilizations that were a part of the Mound Builders were from 1000 BC to 200 AD.

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The Incas were in fact the first people to start brain surgery. Although they didn't have any medications to numb pain and most of them ended in failures, we wouldn't be where we are right now if it weren't for them.

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Not only were they smart enough to think of brain surgery, but they also devised book keeping.

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I chose the Incas because I have been told that I'm smart, and the Incas were also very intelligent.

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The group was located were modern day Guatemala City is.

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They lived with a very diverse terrain. They had mountains, deserts, plains, and a tropical forest.

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In order to get work done, every member of the Incas did what they needed to do and worked.

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They usually lived in 1 room adobe houses with thatched roofs

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They believed in a god that created everything that you can see. They performed human sacrifices to their god.

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They wore clothing that was very similar to a poncho, but it was much thicker, heavier, and warmer than our ponchos now.

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Like I said before, they devised book keeping and were the first to perform brain surgery

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When a man came over to their territory, the Incas were just finishing a civil war and were low on supplies. That made it really easy for him to come in and take over everything.

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They used a quipu as their writing system. They formed knots in different orders and places, so they were the only ones who could read it.