The role of government was that once the Roman empire established and made christianity the main religion of Rome, it esentially formalized the possibility of christians to take over the religious practice in this empire and gain increased power.
The Continental Congress adopted the Articles of Confederation, the first constitution of the United States, on November 15, 1777, but the states did not ratify them until March 1, 1781. The Articles created a loose confederation of sovereign states and a weak central government, leaving most of the power with the state governments. Once peace removed the rationale of wartime necessity the weaknesses of the 1777 Articles of Confederation became increasingly apparent. Divisions among the states and even local rebellions threatened to destroy the fruits of the Revolution. Nationalists, led by James Madison, George Washington, Alexander Hamilton, John Jay, and James Wilson, almost immediately began working toward strengthening the federal government. They turned a series of regional commercial conferences into a national constitutional convention at Philadelphia in 1787.
The draft system used to work a bit differently than it does now but the key principles are that youth affects the draft since those in their 20s almost always get drafted. As soon as a person turns 18 they have to sign up for the draft and usually older people don't participate in the war.
When it comes to the socioeconomic status, the draft usually was focused on those from poor backgrounds or from the working class. Upper class members would rarely get drafted for war unless they wanted to get drafted personally. For example, if you're at a university there is a lower chance of getting drafted than if you only had finished high-school.
Americans did many things to avoid getting drafted. Some even participated in public protesting and hid from the police that would take them to get drafted, going as far as to hiding in a different country. Others wanted to make it a symbolic thing and would burn their draft books publicly as a sign of protest. The people who avoided getting drafted were known as draft dodgers.