Flight of middle-class white families
The third part of James k. Polk's war plan was to "1.) to capture Mexico city". This fell outside Polk's usually craving for manifest destiny, which up until then have only been an east-to-west route.
Absolute advantage is the ability to produce more or a given product using a given amount of resources. Comparative advantage is the ability to produce a product most efficiently given all the other products that could be produced. The country still needs to trade for goods and services where it does not have a comparative advantage.
The correct answer is it lacked a bill of rights for the people.
This fight for a bill of rights for the people was lead by a group known as the Anti-federalists. The Anti-federalists feared that the new constitution did not guarantee a certain set of rights to citizens. This groups fear was that without this list of rights, the central (aka federal) government may become tyrannical and take away rights from citizens. This fear was rooted in America's experience as colonists under the control of Great Britain.
This is why the US Constitution ended up with a bill of rights, as Anti-federalists refused to agree to it until one was implemented.
All states which are long distance from each other are trading with each other.
Some of them produce goods needed for other states which are too far of them.
That trading economy were rising in the 1800s.