The census also determined that there were fewer than 385,000 individuals who owned slaves.
<span />the earth was thought to be the center of the universe, rather than the sun
It can. The mexican-american war also dealt with the future of the territories that were involved like the Texas territory. Since the United States won the territories from Mexico, the new colonies wanted to be slave colonies, and the general government disliked this. There would've been fewer slave colonies if they hadn't been conquered.
Should be the second answer (b)
If you mean why did Spain establish settlement at St. Augustine. The reason why was because religion, treasure, and colonization.