The first Spaniards that penetrated south from the bolivian plateau failed to reduce them to submission.
"The South American Republics Part I of II"
Thomas C. Dawson
The southern part of the great bolivian plateau seems to have submitted quietly to the Spanish conquerors, and the stream of adventurers passed on to the south.
"The South American Republics Part I of II"
Thomas C. Dawson
And they also lay some stress upon the fact that the stuff had been in use by the bolivian army."
"Ashton-Kirk, Investigator"
John T. McIntyre