There are many of them but the most common are:
1.) Photosynthesis
2.) Solar Energy
3.)Thermochemical Reactions
I believe there are lots of reasons why the Roman Empire declined but the 3 most important ones are, Government corruption and political instability, Invasions by Barbarian tribes, and The rise of the Eastern Empire, but the one I think is the most important is the first one reason.
Answer:
The Tao.
Explanation:
'Tao-Te-Ching' is a book written by Lao Tzu. In the book, the sage explores the aspects of Taoism in this book.
He states that 'The Tao' is the central force of the universe which connects all beings, from the creation of galaxies to the interaction with humans. For many, The Tao is unexplainable.
The Tao is a Chinese word which simple means 'the way' or 'the path.' Lao Tzu goes on stating that 'The Tao' is not a thing but a universal concept which needs to be learn in order to discern the human wisdom.
Therefore, the correct answer is 'The Tao.'
The Romans (Julius Cease 55 B.C.)
The Anglo-Saxons (449 A.D.)
The Vikings (793 A.D.)
The Normans (French; 1066 A.D. Battle of Hastings)
