Propylene glycol is also used as moisturizer in cosmetic products and as a dispersant in fragrances. There are many other food and industrial uses for propylene glycol. As a food additive, propylene glycol is on the U.S. Food and Drug Administration (FDA) generally regarded as safe list (not to be confused with ethylene glycol, which is extremely toxic if ingested).
The Incas were an ancient people who lived in South America. Their unique culture began to spread during the 12th century, and within 400 years, they controlled a larger territory than any other South American cultural group had ever controlled.he Incas were an ancient people who lived in South America. Their unique culture began to spread during the 12th century, and within 400 years, they controlled a larger territory than any other South American cultural group had ever controlled.
The Inca Empire was a vast empire that flourished in the Andean region of South America from the early 15th century A.D. up until its conquest by the Spanish in the 1530s. Even after the conquest, Inca leaders continued to resist the Spaniards up until 1572 when its last city, Vilcabamba, was captured. The Incas built their empire without the wheel, powerful draft animals, iron working, currency or even what we would consider to be a writing system.