What are the role of Federal government for implementation of federalism​

Only the federal government can regulate interstate and foreign commerce, declare war and set taxing, spending and other national policies. These actions often start with legislation from Congress, made up of the 435-member House of Representatives and the 100-member U.S. Senate.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!

answer; the cats meowing will temporarily increase, but then it will decrease;