Answer:
A federal government would best suit the United States. A federal government allows for the division of powers among the central government and the states, so each state would have power along with the limited power of the central government. The national government would focus on more pressing matters such as commerce, foreign affairs, and war, while the smaller matters such as establishing schools, building roads, and taxation. The division of powers makes for a more efficient government that is also more effective in it's purpose.
A federal government, along with dividing powers, would also make sure that the central government keeps in mind the interests of the states. States and national government have shared powers, called concurrent powers, so states also have the power to make changes best suited to their interests. It is important, however, that the national government keep in mind what is most beneficial to the states and country as a whole, and a federal government allows for this to happen.
One could claim that a confederation of states would allow states to have more power and freedom to do what benefits them most without the national government getting in the way. While this is a valid argument, it is very important that no one state attains too much power. Along with that, if one or more states were to secede, the confederation would be more vulnerable to invasion or attack by another nation. The power that each state has can be kept in check by a national government and the government is also designed to protect it's citizens, and for those reasons, a federal government is best suited to the United States.
Explanation: