The three anti-Jackson forces that came together involved the nationalists allying with Henry Clay and John Quincy Adams, Daniel Webster (New England business interests) and the South (particularly South Carolina).
The Stamp Act, Intolerable Act, and the Boston Tea Party were the events that led to the Revolution.
Because ideology is an important factor in determining how people make decisions, and it’s moral aspects make us more aware of the world and the different personalities on it