=== Needs correction === 
 Now that I've checked the external link in the article, I'm pretty sure that this article's definition of gadaa (i.e., as the name of a religion) is incorrect. The website uses the term to describe the entire Oromo culture, including religion. The way the websie is worded does imply that gadaa is a religion, but upon reading the entire article, I don't think this was the intent. And everything else I can find about gadaa (so far) defines it as the stratification system. So, this article needs to be re-written, and a new article (presumably named Waaqqefata) created about the religion.