The form of government would be a Oligarchy
Hey there!
The answer to the question of, "What was one main effect of slave sale days?" would be "families were divided and eventually spread across the country."
The excerpt talks about how a mother is horrifically separated from her seven children on a sale day. She's absolutely devastated over the loss, and even asks why God won't just kill her, and the narrator states that "instances of this kind are of daily, yea, of hourly occurrences." The excerpt also states that when the mother asked the trader where her children were going to go he wouldn't tell her, but she knew they would go wherever the highest bidder was. All of this evidence shows that:
It is not true that "many found new and happy families";
It is also not true that the traders left quickly to avoid being caught, as they were actually just leaving to sell the slaves wherever they could get the most money;
It is not true that "people gathered and renewed family bonds" as the families were actually being torn apart on these days.
And that it <em>is </em>true that families were divided and eventually spread across the country.
Hope this helps, let me know if there's more I can do.
The best example are roads.
USA economy is a mixed-market economy. It blends elements from market economy with elements from planned economies.
Private ownership is prioritized ( free market economy) but the government <em>has control over some public services</em> such as healthcare (to an extend), physical infrastructure<em> (the road system</em>), education, national defense, the postal system and some public lands.
The idea behind public ownership of these services is that they are better performed by public than private enterprise.
The roads in the USA and their infrastructure are<em> funded by taxes</em> (especially the gas one), tolls and user fees.