The world has never had a good definition of the word liberty, and the American people, just now, are much in want of one. We all declare
for liberty, but in using the same word we do not all mean the same thing. With some the word liberty may mean for each man to do as he pleases
with himself, and the product of his labor, while with others the same word may mean for some men to do as they please with other men, and the
product of other men's labor. Here are two, not only different, but Incompatible things, called by the same name, liberty. And It follows that each of
the things is, by the respective parties, called by two different and incompatible names-liberty and tyranny.
(from "Defining Liberty" by Abraham Lincoln)
Which definition of declare is used in this paragraph?
1. to clarify
2. to acknowledge
3. to voice support
4. to formally announce