I just finished a game as Brazil via UHV. A couple of comments: The improvement for spices are now orchards instead of plantations. Can we reduce the required slave plantations for Brazil's UHV from 10 to 8? I played from a 1700 AD start, and I was lucky enough to encounter a still-surviving Congo that would provide me enough slaves. However, I needed to control a colony outside my home continent to be able to buy them. Perhaps the post-colonial civs (Brazil, America, Mexico, Colombia, Argentina and Canada) could be allowed to buy slaves even without a colony.