Spanish ships carrying supplies and payments for the soldiers and missionaries stopped after 1810. The presidios pressed the missions for more supplies, and the missionaries pressed the mission Natives to work longer hours and be more productive. The Natives did not receive additional compensation for their extra labor. In addition, the independence of Mexico from Spain in 1821 brought about an economic depression to the region. The Franciscans increased their efforts to suppress Chumash culture after 1820, leading to increased resentment of the missionaries. Rumors of impending violence among both the soldiers and the Natives were common by the early 1820s, and the Chumash spent months in preparation for the uprising. The Native Americans were aided in their preparations by having been armed with bows, spears, and machetes and trained in European military tactics to be able to defend the missions against a pirate who attacked Alta California in 1818. The Chumash reached out diplomatically to the neighboring Yokuts, and some Yokuts villages sent an indeterminate number of men to assist with the insurrection. Political considerations from Mexican independence in 1821 from the Spanish empire must also be taken into consideration for the Chumash motive to rebel. The 1810-14 Spanish constitution established a precedent for the equality of Native Americans with Europeans, and was created with participation from delegates originating in Spanish territories throughout the American continents. This constitution gave full citizenship rights to all persons in the Spanish colonial holdings, regardless of social or ethnic status. It also outlawed requiring Natives to pay tribute and the practices of forced labor and corporal punishment. The constitution itself was short lived; the official who went to Alta California to put the constitution in place was informed that it had officially been rescinded prior to his arrival, but the official continued to try and build support for the spirit of the law. Later, the Mexican declaration of independence of 1821 "abolished all distinctions among Europeans, Africans, and Indians," and a Mexican government decree the following year outlawed the term "indio" from use, to be replaced with the word "citizen." A commissioner was appointed by the Mexican government to spread the word of the new policy throughout California and to implement government bodies responsible for carrying out the policy in 1822. Fray Payeras recorded that one quarter of the Native Americans in his mission voiced approval for the Mexican message of liberty. The