stoicism
The main source areas for the world's major belief systems are Asia, Europe, and North America. In Asia, the major belief systems are Hinduism, Buddhism, Confucianism, and Taoism. In Europe, the major belief systems are Christianity and Islam. In North America, the major belief systems are Judaism and Christianity.
Monotheism, or belief in one God. The three faiths mentioned are specifically known as the Abrahamic faiths.
Belief in Philosopha doctrine and dialectics, lead to the downfall of Rome
The major river of Rome is the Tiber River.
In Ancient Rome there was no education for the population in general and it was only for the nobility.
There are no major cities in Rome - Rome is a city, the capital city if Italy. (It you meant to ask - "What are the major cities of the ancient Roman Empire" - then ask this as a separate question).
Bhagavad Geeta is from Hindu belief system.
One example of a belief system is religion. Certain religions believe certain things. Also, science is another example of a belief system.
The major belief (or teachings) of Buddhism is the Four Noble Truths. The major practice of Buddhism is the Five Noble Precepts.
Rome, Italy is a city.
No it was not. The Colosseum was an amphitheatre. The seating of a theatre was a semi-circle. The seating of an amphitheatre was a full circle or an oval. Basically, an amphitheatre was an arena.