Before Emancipation of slaves in the US many states in the south were afraid to let slaves have freedom because there were all ready a good amount of states to the north that had outlawed slavery. Many people were concerned with the new found freedom of people coming out of slavery. I was not able to find any laws before slaves were freed. I hoped this helped some what.
"Ornate and patterned" would be the best option when describing the architectural style of the Islamic Golden Age, although there were exceptions of course.