Which principle did the U.S. Constitution incorporate to address the colonists' grievances?

The principle of separation of powers is integral to the U.S. Constitution, designed to prevent any one branch of government from becoming too powerful and thereby addressing key grievances that the colonists had against British rule. Under British governance, the absence of checks and balances allowed the monarchy to exert unchecked authority, leading to abuses of power. By dividing the government into three distinct branches—legislative, executive, and judicial—the Constitution ensures that legislative powers are separate from executive authority and judicial functions. This structure not only allows for a system of checks and balances but also reflects the colonists' desire for a government that would be accountable and responsive to the people, contrasting sharply with the centralized power they experienced under British rule.