The purpose was to reduce the growth rate of China
It's to avoid the full power of a monarchy.
If I'm right feel free to drop a follow~!
Thomas Jefferson broke the precedent in the nineteenth century, but it was restored when Woodrow Wilson in the twentieth century.
I hope this helped for your history question
The modern Agricultural Revolution can be understood to refer to the introduction of machinery into revolution (= the start is the development of machines), which made the production more efficient and reliable.