I thought that atheists believed that politics and religion have caused most if not all wars in history? Guess what was the impetus for developing technology?

I thought that atheists believed that politics and religion have caused most if not all wars in history? Guess what was the impetus for developing technology? War. i.e. politics by other means. Guess that Stalin developed technology for the love of the game, though. Not for war or politics or anything. Or are we saying that religion and politics have moderated the impulse to war? i.e. in an ancient atheist world, war would have been much more furious and necessary for survival, so the pressure to develop technology would have been much greater than it was with all those pacifist monks running around spoiling everyone's armed conflict fun with their woo-woo? -- Maybe ICBMs should have been invented around the time that Byzantium was founded