The Mayans are located in North America. They were a very advanced culture.
One More Achievements
The Mayans were ever ahead of Europe with there mathematics, with the concept of Zero. Its important because if there wasn't the concept of Zero then we wouldn't have technology, most of the coding is in Zeros and Ones.
They were advanced in Astronomy, now think about if we didn't have the knowledge that we do we would have never wet to the Moon and be working on other ladings as well.
The calendar was important because we wouldn't have away to keep track of the days.
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There were 4 theories of how the Mayans came to fall out. The first theory is that warfare, second was disease, third famine and lastly Environmental change. Now some people think that a Disaster happened but if a Disaster happened there would have been proof if it happened.
I think that the Mayans came to an end by all of them. So what happened was the warfare, with the famine came after they were kinda getting sick and they were weak after the fighting.