sentences:  Doing so ensured the population growth and economic development of his colony, which was primarily dependent on the monocropping of cotton and sugar.Arguing that the loss of slaves would be ruinous to the colony, he arranged for his settlers to receive eighty acres of land for each slave they brought with them to Texas.In August 1825, he recommended that the state government allow immigrants to bring their slaves with them through 1840, with the caveat that female grandchildren of the slaves would be freed by the age of 15, and males by age of 25.