EVM (Earned Value Management) was created by the DoD - Department of Defense, United States in the 60s. It is unknown who was the main brain (individual) behind it. EVM evolved and matured quite a lot since its inception.
No problem, I'm happy to help. I wish that you and other people asking questions create an account on the website and use it to post questions. Nevertheless, I try my best to answer (or have answered) any Project Management question asked.