The French Revolution was a timeframe in France when the individuals toppled the government and assumed responsibility for the administration. When did it occur? The French Revolution kept going 10 years from 1789 to 1799. It started on July 14, 1789 when progressives raged a jail called the Bastille.
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.
I believe it would be the spy system. During the war, some americans were for and against the war and independence. To keep in the know of what the british were planning, there was an elaborate spy system to spread information on the british troops where people acted as they were for british rule. :)
hope this helps!!