1,590 million years ago of
- Erlend Bjørtvedt (original author)
- The supercontinent Columbia 1,590 million years ago
- Columbia (supercontinent) (Wikipedia)
Columbia, also known as Nuna or Hudsonland, is a hypothetical ancient supercontinent. It was first proposed by John J.W. Rogers and M. Santosh in 2002 and is thought to have existed approximately 2,500 to 1,500 million years ago (Ma), in the Paleoproterozoic era. The assembly of the supercontinent was likely completed during global-scale collisional events from 2,100 to 1,800 Ma.
- Military fiction (Wikipedia)
Military fiction is a genre of fiction, focusing on military activities, such as war, battles, combat, fighting; or military life.
