The plan for dividing France was called the Congress System.
Divisor
The quotient
a fraction that can be changed by dividing it is called an improper fraction.
Separation of powers is what dividing the powers of government is called.
Dividend.
It is called a border.
great dividing range
Cells multiply by dividing ( which is an oxymoron) is done by the process called Mitosis.
The plan for dividing France was called plans cadastraux. It is detailed plan about the land parcel boundaries in France.
Trisection
It was called the Treaty of Tordesillas.