In what ways did the Enlightenment Era and the creation of the United States Constitution succeed and in what ways did they fail?

Which is the best example of a primary source ducument useful in the study of history ?

When did the us congress declare war on the confederate states?

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.