 Complete the following phrase:  Additionally, in 1766 Spain issued a cedula an edict proclaiming that the alcabala tax on sales would be collected in certain cases of coartación. Coartación wasnt officially put into Cuban law until 1842. In the years preceding the Reglamento de Esclavos of 1842, masters had been trying to curb the practice of coartación which they saw as an affront to the institution of slavery. But with the British abolitionist movement becoming an increasingly strong force, Governor Valdés made the proclamation despite the masters. Masters continued to protest the Reglamento, blaming it for the conspiracy of La Escalera. While the courts did try to review certain articles from the proclamation, especially the article that allowed slaves to change masters at will, they ultimately decided in 1862 to uphold all parts of the law. In 1871, the governor did establish that rural slaves could not change masters at will, but by this time eastern Cuba had erupted in an 