Why was WW1 known as the war to end all wars?

World War I was known as the “war to end all wars” because of the great slaughter and destruction it caused. Unfortunately, the peace treaty that officially ended the conflict—the Treaty of Versailles of 1919—forced punitive terms on Germany that destabilized Europe and laid the groundwork for World War II.

both believe in many god or polytheism

both built temples that they worshiped in both civilization's god were humanoid

both groups made religion a large portion of their lives

both believe in one religion throughout

the dead were buried with items for the afterlife