Radioactive Material found in Ancient Pyramid – Is history repetitive? Does it repeat or rhyme?

“This itself is a true enigma… how did the builders of Teotihuacan extract nearly 30 square meters of mica in Brazil, transport it nearly intact to Mexico without roads, or advanced means of transportation, thousands of years ago?”

http://www.ancient-code.com/teotihuacan-and-mica-what-is-mica-a-powerful-radioactive-insulator-doing-in-monuments-that-date-back-thousands-of-years/

Were civilizations before us just as advanced as we think we are today? What happened to them?