The gulf of tonkin resolution, passed in 1964, gave the president which power?

It gave the president of the United States the power to defend against any aggressive acts aimed at the U.S.  This was the beginning of American Involvement in the Vietnam War which would be the first war where America was defeated.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

your answer is a hope this