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.
The plan for dividing France was called plans cadastraux. It is detailed plan about the land parcel boundaries in France.
great dividing range
Cells multiply by dividing ( which is an oxymoron) is done by the process called Mitosis.
Trisection
It was called the Treaty of Tordesillas.