The government didn't have a standing army to take over any state or groups of people.... A standing army giving the federal government power over us, was made unconstitutional in the constitution.
The state's Militia is who the federal government would need state governors to call up, if the federal government needed an army.
The 2nd amendment is about arming and regulating state Militia, so that as a Nation, we would have a collective self defense.
The people, men between 17 and 45 were in state Drafts, and had to be armed with their own weapon, under state law, to be ready to be called up for the State Militia, and ready for their governor, to send them out to defend our nation, if and when the federal govt needed them in our country's self defense.
Our govts had no money to buy guns, the people individually drafted, had to bring their own.