What company, founded in 1993 by Donald Gary Young, led to the establishment of DoTerra?
DoTerra:  doTerra ("terra" is the Latin word for Earth) was founded in 2008 by David Stirling and former executives, employees, and distributors of Young Living, a company which also sells essential oils, and Nuskin. Young Living:  The company was founded in 1993 by Donald Gary Young.
Young Living