Religion (from the Latin Religio, meaning "restraint," or Relegere, according to Cicero, meaning "to repeat, to read again," or, most likely, Religionem, "to show respect for what is sacred") is an organized system of beliefs and practices revolving around, or leading to, a transcendent spiritual experience. There is no culture in human history that has not practiced some form of religion.
This is a companion discussion topic for the original content at https://www.worldhistory.org/religion/.