Answer:
George Washington established precedents for the executive office that have since become customary practice. Washington is responsible for establishing the tradition of the inaugural address and the cabinet system, neither prescribed by the Constitution.
HPOE IT HELPS U..
Some might say FDR, some might say LBJ, others might say Nixon. The reality is that the power of the Legislative vis a vis the Executive is in constant flux.
In terms of sweeping policy initiatives FDR's administration might be the time when the Presidency took on many of its contemporary roles. The activism of the LBJ administration was a further expansion of the New Deal-era role of the FDR administration. LBJ also was arguably the first president to use the US armed forces in foreign engagements without Congress declaring war (Gulf of Tonkin resolution)--a precedent we have become all too familiar with. In terms of 'imperial pretensions' Nixon assumed all the New Deal, Great Society, civil rights activism, and the ability to intervene militarily of the preceding Presidencies and expanded them to include unfettered use of the CIA and FBI.
<span>The correct answer is the federal system. Power is shared between the two governments and states have the right to make their own laws as long as they're not unconstitutional or against the federal law. Federal law applies to all the states in a federation, like the United States has in the congress.</span>