Economic issues both had problems in economics after World war 1
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.
King charles II owed money to william penn's father. because his father died before the debt was paid, william penn received charles's payment. instead of money, charles granted him land which was named Pennsylvania after william penn's father.
A federal government structure is outlines in the first three articles of the U.S Constitution