Try reading the first paragraph of this. It may help. https://books.google.com/books?id=IQwAAAAAMBAJ&pg=PA2&lpg=PA2&dq=How+does+columbus+and+smith+deploy+...
Answer:
Lincoln's decision to fight rather than to let the Southern states secede was not based on his feelings towards slavery. Rather, he felt it was his sacred duty as President of the United States to preserve the Union at all costs.
The answer is checks and balances.
It was horrendous. There were absolutely no Child labor laws, meaning that children would face practical slave labor and really unsafe conditions while working in factories. The machines in these factories were anything but safe, and it was not uncommon for someone to lose a finger, and/or die due to an affect of the machine. There were no laws in place at this time to change this.
There were many sources of conflict at the constitutional convention. One issue was regarding states' rights. Another had to do with representation, or how many votes each state should get and whether to base it on population or equality. Don't forget slavery!