what an indigenous group who left their cities around 800 A.D.

On which continent? Where?

What are does

I dont now

An example of an indigenous group who left their cities around 800 A.D. is the Mayan civilization. The Mayans were a Mesoamerican civilization known for their advanced knowledge in mathematics, astronomy, writing systems, and architecture. However, around the 9th century A.D., many Mayan cities were abandoned and left in ruins.

To find this information, you can follow these steps:

1. Start by searching for "indigenous civilizations in the Americas around 800 A.D."
2. Look for results related to Mesoamerican civilizations, as they were prevalent during that time period.
3. As you gather information, focus on specific civilizations that experienced decline or abandonment in the 9th century A.D.
4. Explore further to find specific examples of indigenous groups who left their cities around 800 A.D., such as the Mayans.

Remember to cross-reference information from reliable sources to ensure accuracy and get a more comprehensive understanding of the topic.