The movement that most directly influenced the writing of the Declaration of
<span>Independence was "the Enlightenment," since it was Enlightenment thinkers such as John Locke who heavily advocated for individual liberty and "social contract". </span>
Yes. If there is no cause there is no effect.
There is a role for the United Nations still as a Peacekeeper in today's world because they can't necessarily force a country to make or keep peace but they can go to a country with a smaller war going on and slowly make peace and as they progress with the small countries they can move onto the bigger countries to make peace.
So they can grow stuff fast and make more money that way