By 1810, Spain’s king had been imprisoned by the French, and financing for military payroll and missions in California ceased. In 1821, Mexico achieved independence from Spain, although Mexico did not send a governor to California until 1824, and only a portion of payroll was ever reinstated (ibid. ). The 21,000 Mission Indians produced hide, tallow, wool, and textiles at this time, and the leather products were exported to Boston, South America, and Asia. This trading system sustained the colonial economy from 1810 until 1830. The missions began to lose control over land in the 1820s, as unpaid military men unofficially encroached, but officially missions maintained authority over native neophytes and control of land holdings until the 1830s. At the peak of its development in 1832, the coastal mission system controlled an area equal to approximately one-sixth of Alta California. The Alta California government secularized the missions after the passage of the Mexican secularization act of 1833. This divided the mission lands into land grants, in effect legitimizing and completing the transfer of Indian congregation lands to military commanders and their most loyal men; these became many of the Ranchos of California.