The separation of the power of the states from that of the federal government and the division of the federal government into three branches (executive, legislative, and judicial), each of which has specific powers upon which neither of the others can usurp. These checks and balances are given large credit for the prevention of a tyrant ever seizing power in this country.
The Convention in theory maintained the separation of powers.
Since the separation of powers was still deemed axiomatic, the directors had no voice in legislation or taxation, nor could directors or ministers sit in either house.
In order to understand the organization of the various constituent parts of the Roman Curia, we must remember that the modern principle of the separation of powers is unknown to the Church; the functions of each department are limited solely by the extent of the powers delegated to it and the nature of the business entrusted to it; but each of them may have a share at the same time in the legislative, judicial and administrative power.
Indianapolis is governed under a form of government adopted originally in a special charter of 1891 and in 1905 incorporated in the new state municipal code, which was based upon it, It provides for a mayor elected every four years, a single legislative chamber, a common council, and various administrative departments - of public safety, public health, &c. The guiding principle of the charter, which is generally accepted as a model of its kind, is that of the complete separation of powers and the absolute placing of responsibility.
The British constitution, largely unwritten, is based on the separation of powers.