Share this credible answer with others. Simply paste this code into your blog or Web page:
Without paper or a system of writing, the architects and master masons who designed and supervised the construction of public buildings and engineering works in such cities as Machu Picchu and the fortress of Sacsahuamán built clay models and, in actual construction, employed sliding scales, plumb bobs, and bronze and stone tools.
|
Answer verified with
|
HighBeam gives you access to newspaper, magazine, and trade journal articles plus press releases, facts, information, and biographies from thousands of sources.