If the universe was born at the big bang, what existed before then?

space-time

Explanation:

The initial singularity is a gravitational singularity predicted by general relativity to have existed before the Big Bang and thought to have contained all the mass and space-time of the Universe.

the main reason that the constitution did not proclaim all men to be free and equal is because of the issue of slavery.

there were 6 major base camps.   the base camps were located in alva, fort reno, fort sill, the madill provisional internment camp headquarters, mcalester and camp gruber.