explain both the specific political grievances and the universal ideals of Common Sense and the Declaration of Independence.

(Long answer) Common Sense was a book written by Thomas Paine that was about and included topics of American Revolution,
Government & Politics,
Government & Politics, 18th Century
Military, Professions & Vocations, and
Publishing & Journalism. It rounded up more people for his cause, example: John Adams was highly attractive to the book.

In the midwest because it has more moderate climate than the north or south west which makes farming far easier.