Answer:In the nineteenth century America, people developed stronger alliance to their state or region instead of the whole nation.
Explanation:People developed stronger alliance with their state or region because there was a lot of slavery and many parts of America didn't agree with that or they didn't agree with other rules/customs that were used in the individual state so they only cared about their state, if they agreed with what was happening in their state.
The act of keeping something dangerous under control or within limits.
If you need an example think of quarantine the dangerous disease be Corona Virus and to keep it under control we are staying inside.
New trade routes and slavery.
Trade plans got them newer items and unfortunately slavey go them their items.
Hope this helps!
Because of jobs, safety and family.