Document 2:
"it gives me pleasure to announce to congress that the benevolent policy of the government, steadily pursued for nearly thirty years, in relation to the removal of the indians beyond the white settlements is approaching to a happy consummation.

two important tribes have accepted the provision made for their removal at the last session of congress, and it is believed that their example will induce the remaining tribes also to seek the same obvious advantages."
-- from the indian removal act of 1830

explain this as

In 1830 Congress, urged on by President Andrew Jackson, passed the Indian Removal Act which gave the federal government the power to relocate any Native Americans in the east to territory that was west of the Mississippi River.

The Indian Removal act was passed in May 1830 by President Andrew Jackson. It gave president the power to negotiate with the southern Native American tribes and to remove them from the federal territory in the west of Mississippi river by exchanging white settlements for their ancestral lands. The act was supported by the northeastern and southern populations, natives and Whig parties opposed it. Cherokee Indians opposed the relocation but they were unsuccessful.

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.

boundary is what it refers to hope this

explanation: