Its California<span>'s largest not-for-profit business federation, representing the interests of more than 235,000 businesses in L.A. County, more than 1,600 member companies and more than 722,430 employees</span>
Congress did not have the authority it prohibit slavery in the territories
Due to the backing up of the Spanish and Portuguese. I believe they seemed to be more liberal toward the public at that time. And had a lot of money, whilst Britain, France, Dutch guys were opposite.
I'm not entirely sure since i'm British