Lincoln claims that the Union is perpetual because a) all governments are perpetual by their very nature
b) it existed before either the Declaration or the Constitution
c) the Constitution declared it to be perpetual
d) the Declaration of Independence declared it to be perpetual

The author of the article, arthur brooks, has been president of the american enterprise institute since 2009, an organization committed to protecting free enterprise in the united states.he is the author of several books, including "the road to freedom: how to win the fight for free enterprise."