It depends on which war you're referring to. I feel that the answer you're looking for is the radio, though.
What do you need help with
The major dividing difference was how each party wanted power to be distributed. Democratic-Republicans looked to limit the power to any single branch of government, while the Federalists wanted to give much more power to the executive branch.
It rewarded political loyalists and friends of the government to be granted with political positions of any power.