Congress may, by a two-thirds vote in each chamber, propose a specific amendment; if at least three-fourths of the states (38 states) ratify it, the Constitution is amended. Alternatively, the states may call on Congress to form a constitutional convention to propose amendments.
To grow crops and to make better weponds
I'm not 100 percent sure on this, but I think it basically means "A smart leader makes the law promote others and not himself. He makes the law judge others, but does not add anything unnecessary in order to control others." I hope this helps.
The highlighted
and intensified growing tension in the united states that continued to be unresolved
as an outcome of the Mexican war is Sectionalism, the differences
between northern and southern states on whether slavery should be allowed in
newly acquired states.