The answer is D leaders do not have the right to oppress their people
The answer is A. Developed extensive trade networks
1. Ancient Egypt is best known for its Pyramids as they where the tallest and biggest man made structures at the time.
2. Ancient Greece where best known for inventing mathematics and philosophy
3. Maya Civilization they where best known for there architecture as they made many temples.
If you where asking for one civilization with three Best known facts then here's this
Ancient Egypt was best known for its Pyramids as they where the tallest and biggest man made structures at the time. Secondly they where known for there Sahara Desert as it acted as a natural barrier against anyone trying to attack them. Lastly is the Nile rivers as it supplied them with water for drinking and watering crops.
They could only be readmitted if they ratified the 13th, 14th &15th Amendments. These amendments first abolished slavery, prohibited depriving any male equal protection under the law, & gave African Americans the right to vote.