<span>To make sure that fundamental changes in the structure of government would require substantial time and debate and reasoned consideration</span>
I'm assuming you meant to type "unalienable". If so, the document that inspired alienable rights was Thomas Hobbes Leviathan.
The modern Democratic Party emerged in the late 1820s from former factions of the Democratic-Republican Party, which had largely collapsed by 1824. It was built by Martin Van Buren, who assembled a cadre of politicians in every state behind war hero Andrew Jackson of Tennessee.
I hope this helps in some form or fashion :)
Answer: Tone is the general feeling coming from the writing.
Answer: Unhappy