Answer:
Separation of powers
Step-by-step explanation:
In this quote from Baron de Montesquieu, he stated that if the legislative and executive arms of government are aways in unity then, the checks and balances that should be in government would be absent and this would result in a lack of liberty.
The arms of government are supposed to have a separation of powers or a high degree of independence so that one arm of government does not assume an authoritarian disposition that would lead to a loss of liberty for the people.