They prevented African Americans from becoming farmers. They prevented the migration of emancipated slaves. They promoted peaceful co-existence between blacks and whites. The effect of Jim Crow laws have on Southern society is: They created a racially segregated society.
#2 It offered adequate space, a prison, and the Palace of Justice was undamaged.
Many people who were no longer servants or slaves found a new life of a ranch work and independence in the Far West.
The national government got stronger thanks to the Articles of Confederation being replaced with the US Constitution. The Articles of Confederation was America's first constitution. This constitution lasted roughly a decade, as it was extremely ineffective and gave the federal government very little power. For example, the federal government could not collect taxes or force states to follow national laws.
When the US Constitution was passed, the federal government gained significant power. This included the creation of an executive branch, the idea that federal laws trump state laws, and the ability to raise funds in order to create a national military.