Before 1530 there were enough Negroes in Mexico to lead to an insurrection, where the Negroes fought desperately, but were overcome and their ringleaders executed. Later the followers of another Negro insurgent, Bayano, were captured and sent back to Spain. Negroes founded the town of Santiago del Principe in 1570, and in 1540 a Negro slave of Hernandez de Alarcon was the only one of the party to carry a message across the country to the Zunis of New Mexico. A Negro, Stephen Dorantes, discovered New Mexico. This Stephen or "Estevanico" was sent ahead by certain Spanish friars to the "Seven Cities of Cibola." "As soon as Stephen had left said friars, he determined to earn all the reputation and honor for himself, and that the boldness and daring of having alone discovered those villages of high stories so much spoken of throughout that country should be attributed to him; and carrying along with him the people who followed him, he endeavored to cross the wilderness which is between Cibola and the country he had gone through, and he was so far ahead of the friars that when they arrived at Chichilticalli, which is on the edge of the wilderness, he was already at Cibola, which is eighty leagues of wilderness beyond." But the Indians of the new and strange country took alarm and concluded that Stephen "must be a spy or guide for some nations who intended to come and conquer them, because it seemed to them unreasonable for him to say that the people were white in the country from which he came, being black himself and being sent by them."[76] Slaves imported under the Asiento treaties went to all parts of the Americas. Spanish America had by the close of the eighteenth century ten thousand in Santo Domingo, eighty-four thousand in Cuba, fifty thousand in Porto Rico, sixty thousand in Louisiana and Florida, and sixty thousand in Central and South America.