The modern Agricultural Revolution was started by the increase in farm technology and new ideas like crop rotation.
The philosophy of respecting the emperor and the Mandate of Heaven was one of the inspirations for the development of filial piety. It is a Confucian philosophy wherein "it is a virtue to respect parents, the elderly, and ancestors." It is of huge importance to the ancient Chinese society because it sets the moral value of people.
The Aztecs were an early civilization that was originally living around rivers, steams and other water resources for food and water.
Aztecs multiplied along the time they were along the resources. In conclusion, they were also a strong civilization that lasted a while, allowing time to populate.
(I'm sorry I can't think of a 3rd but I hope I helped)
6/9
find the smallest number you can that goes not both numbers.
2 goes into 6, but not nine. so its not 2
3 goes into 6...and nine!
6/3=2
9/3=3
the simplest form therefore is 2/3 :)