The Anasazi built large pueblo villages in Colorado, with one having 1,800 rooms and housing 3,000 people. However, the Anasazi civilization declined after 1300 as people began leaving their pueblos. The Mound Builders lived in the eastern US and constructed earthen mounds of various shapes and sizes, some designed as animals. Cahokia Mound in Illinois, one of the largest, was pyramid-shaped and measured 1,000 feet long, 300 feet wide and 100 feet tall, and may have been home to as many as 30,000 people.

1. North American Civilizations Name: Daniel Small Rubio

2. The Anasazi The anasazi built villages called pueblos. Some pueblos were quite large. On pueblo was built in the modern-day state of colorado. It had 1,800 rooms that held about 3,000 people. The Anasazi civilization declined after 1300. The people began laving their pueblos.

3. Mound Builders Another group of north Americans are known as the Mound builders. They lived mostly in the eastern half of what is now United States. The mound were built in different shapes and sizes. Others were built to look like snakes or birds.

4. Cahokia Mound The cahokia mound in the modern day state of illinois is one of the largest mounds. Shaped like a pyramids, it is 1,000 feet long, 300 feed wide, and 100 feet high. Scientists believe that 30.000 people might have lived at or near this mound.