By the 1870s, the plantation culture of northeast Brazil was already crumbling, and the growth of the movement to abolish slavery threatened it even more. The slave trade had been abolished in 1850, and a law for gradual emancipation was passed in 1871. In 1888, while Pedro II was in Europe and his daughter Isabel was governing, slavery was completely abolished—making Brazil the last Western nation to do so. The law that officially abolished slavery was called Lei Áurea, which means what? Discuss