people
In general terms, nearly every governmental system gives particular duties to each branch of government within it. At the same time, 'constitutional' systems are rightly famous in respect to their careful delineation of distinct branches of government and the proper duties for each; for example, the American system provides very clear guidance on the duties for its judicial, legislative, and executive branches of government.
Theoretically, the legislative branch of government has more power in a Parliamentary system than in a Presidential system of government.
gives each branch of the national government some power over the others
checks and balances
Separation of Powers.
checks and balances
Executive
---> Legislative /Senate
The statement, "The parliamentary form of government gives most of the power of government to the executive" (that is, to the executive branch of the government), is in fact generally false. While an executive branch of a parliamentary system may in fact have tremendous freedom to act politically as its particular genius dictates, it nevertheless receives legitimacy from the legislative branch of the government, which retains the power to revoke the power of the executive branch by formal schedule, in identifiable emergency-situations, or otherwise.
Each branch of the US government receives its authority from the Constitution, which is not a branch of government itself, but a set of guidelines the Founding Fathers created to establish the federal government. The first three Articles assign separate powers to each branch.Article I Legislative branch (Congress: House of Representatives and the Senate)Article II Executive branch (President)Article III Judicial branch (US Supreme Court and the federal court system)
The Unitary system of government gives all key powers to the national government.
Checks and Balances are a thing in the government that are used to make sure that power is distributed equally and that there aren't any mistakes.